A projector with side projection definition compensation function

Abstract

The utility model provides a kind of projector with side projection definition compensation function, including shell, shell inside is provided with optical machine, wherein optical machine includes shell, light source board, light funnel, lens module, reflector and projection lens, light funnel, reflector and lens module are arranged in the inside of shell, the left side of shell upper end is provided with projection port, the right end of projection lens is located in projection port, reflector is obliquely arranged in the right side of projection lens, lens module is located below reflector, light funnel is located below lens module, light source board is installed below shell, the lower end of light funnel is downwardly through shell and is sleeved on the outside of the upper end of light source board, lens module includes rear mirror, rear heat insulation glass, screen frame assembly, front heat insulation glass and front mirror, which are sequentially arranged from top to bottom, screen frame assembly is rotatably arranged in the inside of shell, screen frame assembly with rotatable angle adjustment is used, the problem that picture appears fuzzy around in the work of projector is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of projection equipment, specifically a projector with side projection sharpness compensation function. Background Technology

[0002] With the widespread use of electronic devices, projectors have gradually entered the public eye. Projectors have advantages such as a large display area and easy portability, and are often used in meetings, teaching, and presentations. At the same time, they are gradually entering homes, and more and more people intend to use projectors to replace televisions as their home audio-visual equipment. However, traditional projectors currently have the following disadvantages: 1. Conventional projectors often exhibit varying degrees of image blurring when projecting from the sides. 2. Common optical engines typically use only one fan for internal cooling, resulting in insufficient airflow and thus affecting the cooling effect. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, the present invention provides a projector with side projection sharpness compensation function to overcome the above-mentioned defects in the prior art.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows: A projector with side projection sharpness compensation function includes a housing, a light source board, a light chamber, a lens module, a reflector, and a projection lens. The light chamber, reflector, and lens module are disposed inside the housing. A projection port is provided on the upper left side of the housing. The right end of the projection lens is located inside the projection port. The reflector is obliquely disposed to the right of the projection lens. The lens module is located below the reflector. The light chamber is located below the lens module. The light source plate is installed below the housing. The lower end of the light chamber penetrates downward through the housing and is fitted onto the upper part of the light source plate. The lens module includes, from top to bottom, a rear glass, a rear heat-insulating glass, a screen frame assembly, a front heat-insulating glass, and a front glass, wherein the screen frame assembly is rotatably disposed inside the housing.

[0005] In one embodiment, the housing includes an upper shell, a middle shell, and a lower shell arranged sequentially from top to bottom. The projection port is located at the left end of the upper shell, and the reflector is located inside the upper shell. The rear lenticule, rear heat-insulating glass, front heat-insulating glass, and front lenticule are horizontally disposed inside the middle shell, and the screen frame assembly is rotatably disposed inside the middle shell. The light chamber is disposed inside the lower shell, the light source plate is installed below the lower shell, and the lower end of the light chamber penetrates the lower shell and is fitted onto the outside of the upper end of the light source plate.

[0006] In one embodiment, the screen frame assembly includes a screen frame and a screen body disposed inside the screen frame. Rotating shafts are respectively provided at the left and right ends of the screen frame. Bearing seats are respectively provided inside the middle shell at positions corresponding to the two rotating shafts. The outer ends of the two rotating shafts are inserted into the two bearing seats. An arc-shaped rack is provided on one end of the left side wall of the screen frame. A motor mount is provided on the left side wall of the middle shell, and a motor is mounted on the motor mount. The outer end of the motor's rotating shaft is inserted to the right into the middle shell and has a gear, which meshes with the rack.

[0007] In one embodiment, the two rotating shafts are respectively horizontally arranged at the middle positions of the left and right ends of the screen frame, the rack is longitudinally arranged at the rear end of the left side wall of the screen frame, and a control plate is also arranged on the outer side wall of the housing, and the motor is controlled by the control plate.

[0008] In one embodiment, the lower shell includes a first lower shell, a second lower shell, and a third lower shell arranged sequentially from left to right. The upper ends of the first lower shell, the second lower shell, and the third lower shell are connected sequentially, and their lower ends are spaced apart from each other. The first lower shell is a frame structure with openings on the left and top. The second lower shell is a conical cylinder with openings at both the top and bottom. The third lower shell is a frame structure with openings on the right and top. The light chamber is disposed inside the second lower shell.

[0009] In one embodiment, the middle shell includes a first middle shell and a second middle shell, both of which are rectangular frame structures. The first middle shell is arranged horizontally, and the second middle shell is arranged vertically at the right end of the first middle shell. The lower right corner of the first middle shell is connected to the upper left corner of the second middle shell. The rear Fresnel lens, rear heat insulation glass, screen frame assembly, front heat insulation glass, and front Fresnel lens are respectively disposed inside the first middle shell.

[0010] In one embodiment, the first middle shell is located above the first lower shell and the second lower shell, the right side of the third lower shell is connected to the left side of the second middle shell, and the upper shell is fitted onto the upper end of the first middle shell and the second middle shell.

[0011] In one embodiment, the gaps between the rear lenticule and the rear heat-insulating glass, and between the rear heat-insulating glass and the screen frame assembly, form an upper airflow duct, and the gaps between the screen frame assembly and the front heat-insulating glass, and between the front heat-insulating glass and the front lenticule, form a lower airflow duct. The first lower shell has a first internal fan installed inside, the second middle shell has a second internal fan installed inside, and a fan cover is installed on the right side. A radiator is connected to the left end of the first middle shell and the first lower shell. An air guide hood is provided at the air outlet of the upper end of the first internal fan. The air inlet of the air guide hood is connected to the air outlet of the first internal fan. The air outlet of the air guide hood is connected to the left end of the lower air duct. The right end of the lower air duct is connected to the gap between the third lower shell and the second internal fan. An air inlet is provided on the left side wall of the second internal fan. The air outlet at the upper end of the second internal fan is connected to the right end of the upper air duct through the cavity formed between the upper shell, the first middle shell, and the second middle shell. The left end of the upper air duct is connected to the gap between the radiator and the first internal fan. An air inlet is provided on the left side wall of the first internal fan.

[0012] In one embodiment, one of the bearing seats is disposed on the top of the air guide shroud, and the other bearing seat is disposed at the connection between the first part of the inner shell and the second part of the inner shell.

[0013] Compared with the prior art, the projector with side projection sharpness compensation function provided by this utility model has the following advantages: In this invention, by using a screen frame assembly with an adjustable angle, when the projector exhibits a defect of blurred images around the edges during side projection, the angle of the screen in the screen frame assembly can be adjusted via the control board, thereby achieving a clear side projection image.

[0014] In this invention, two internal fans are installed inside the optical engine to achieve internal circulation heat dissipation. The two internal fans are connected in series, which greatly increases the air volume generated during the entire internal circulation heat dissipation, thereby effectively improving the internal circulation heat dissipation effect. Attached Figure Description

[0015] Figure 1 This is a partial three-dimensional structural diagram of the optical engine in this utility model; Figure 2 This is a schematic diagram of the internal partial structure of the optical engine in this utility model from the main view. Figure 3 This is an exploded view of the optical engine in this utility model; Figure 4 This is a three-dimensional structural diagram of the middle shell in this utility model; Figure 5 is a three-dimensional structural diagram of the lower shell in this utility model. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0017] Furthermore, the terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0020] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0021] like Figure 1 As shown in Figure 2, for ease of description, the orientation references for "up", "down", "left", "right", "front" and "back" in this utility model are based on the orientation shown in Figure 2. A projector with side projection sharpness compensation function includes a housing 1, a light source plate 2, a light chamber 3, a lens module 4, a reflector 5, and a projection lens 6. The light chamber 3, reflector 5, and lens module 6 are arranged inside the housing 1. A projection port is provided on the left side of the upper end of the housing 1. The right end of the projection lens 6 is located inside the projection port. The reflector 5 is tilted and arranged to the right of the projection lens 6. The lens module 4 is located below the reflector 5. The light chamber 3 is located below the lens module 4. The light source plate 2 is installed below the housing 1. The lower end of the light chamber 3 penetrates the housing 1 downward and is fitted onto the outside of the upper end of the light source plate 2. Therefore, the light source emitted by the light source plate 2 is projected through the light chamber 3, lens module 4, reflector 5, and projection lens 6. The lens module 4 includes, from top to bottom, a rear Fresnel lens 41, a rear heat-insulating glass 42, a screen frame assembly 43, a front heat-insulating glass 44, and a front Fresnel lens 45. The screen frame assembly 43 is rotatably installed inside the housing 1. By using a screen frame assembly 43 with an adjustable angle, when the projector has a defect of blurry images around the edges during side projection, the angle of the screen body 432 in the screen frame assembly 43 can be adjusted to achieve a clear side projection image.

[0022] In this embodiment, the housing 1 includes an upper housing 101, a middle housing 102, and a lower housing 103 arranged sequentially from top to bottom. The projection port is located at the left end of the upper shell 101, and the reflector 5 is located inside the upper shell 101. The rear lenticule 41, rear heat-insulating glass 42, front heat-insulating glass 44, and front lenticule 45 are horizontally arranged inside the middle shell 102, and the screen frame assembly 43 is rotatably arranged inside the middle shell 102. The light chamber 3 is located inside the lower shell 103, and the light source plate 2 is installed below the lower shell 103. The lower end of the light chamber 3 extends downward through the lower shell 103 and is fitted onto the upper part of the light source plate 2. By dividing the shell 1 into three parts—the upper shell 101, the middle shell 102, and the lower shell 103—the shape of each part of the shell can be designed to better suit the shape of its internal components. Therefore, while ensuring the normal operation of its internal components, the volume of each part of the shell can be minimized, thereby reducing the overall volume of the optical engine and the projector, making it easier for users to carry and use.

[0023] In this embodiment, the screen frame assembly 43 includes a screen frame 431 and a screen body 432 disposed inside the screen frame 431. Rotating shafts 7 are respectively provided at the left and right ends of the screen frame 431. Bearing seats 8 are respectively provided inside the middle shell 102 at positions corresponding to the two rotating shafts 7. The outer ends of the two rotating shafts 7 are inserted into the two bearing seats 8. An arc-shaped rack 9 is provided on one end of the left side wall of the screen frame 431. A motor seat 10 is provided on the left side wall of the middle shell 102, and a motor 11 is provided on the motor seat 10. The outer end of the rotating shaft of the motor 11 is inserted into the middle shell 102 to the right and is provided with a gear 12. The gear 12 meshes with the rack 9. Furthermore, two rotating shafts 7 are horizontally positioned at the middle of the left and right ends of the screen frame 431, and a rack 9 is vertically positioned at the rear end of the left side wall of the screen frame 431. A control board is also provided on the outer side wall of the housing 1. The motor 11 is controlled by the control board. Therefore, the control board can control the rotation of the motor 11, thereby driving the front and rear ends of the screen frame 431 and the screen body 432 located inside the screen frame 431 to deflect upward or downward, thus solving the problem of blurry images around the edges when the projector is projected from the side.

[0024] In this embodiment, the lower shell 103 includes a first lower shell 1031, a second lower shell 1032, and a third lower shell 1033 arranged sequentially from left to right. The upper ends of the first lower shell 1031, the second lower shell 1032, and the third lower shell 1033 are connected sequentially, and their lower ends are spaced apart from each other. The first lower shell 1031 is a frame structure with openings on the left and top. The second lower shell 1032 is a conical cylinder with openings at both the top and bottom. The third lower shell 1033 is a frame structure with openings on the right and top. The light chamber 3 is disposed inside the second lower shell 1032. Designing the lower shell 103 as consisting of the first lower shell 1031, the second lower shell 1032, and the third lower shell 1033 not only facilitates the more suitable placement of the fan and the light chamber 3 inside the three parts to achieve the function of zoned operation, but also minimizes the volume of the lower shell 103 and its internal space. This not only improves its internal circulation and heat dissipation effect, but also helps to reduce the overall size of the projector.

[0025] In this embodiment, the middle shell 102 includes a first middle shell 1021 and a second middle shell 1022. The first middle shell 1021 and the second middle shell 1022 are rectangular frame structures. The first middle shell 1021 is arranged horizontally, and the second middle shell 1022 is arranged vertically at the right end of the first middle shell 1021. The lower right corner of the first middle shell 1021 is connected to the upper left corner of the second middle shell 1022. The rear Fresnel lens 41, the rear heat insulation glass 42, the screen frame assembly 43, the front heat insulation glass 44, and the front Fresnel lens 45 are respectively arranged inside the first middle shell 1021. The first middle shell 1021 and the second middle shell 1022 adopt rectangular frame structures, which not only facilitates the installation of each lens and fan included in the entire lens module 4, but also facilitates the formation of an internal circulation heat dissipation channel between each lens.

[0026] In this embodiment, the first middle shell 1021 is located above the first lower shell 1031 and the second lower shell 1032. The right side of the third lower shell 1033 is connected to the left side of the second middle shell 1022. The upper shell 101 is fitted onto the upper ends of the first middle shell 1021 and the second middle shell 1022 to form the whole shell 1.

[0027] In this embodiment, the gaps between the rear Fresnel lens 41 and the rear heat-insulating glass 42, and between the rear heat-insulating glass 42 and the screen frame assembly 43, form an upper airflow duct, and the gaps between the screen frame assembly 43 and the front heat-insulating glass 44, and between the front heat-insulating glass 44 and the front Fresnel lens 45, form a lower airflow duct. The first lower shell 1031 houses a first internal fan 13, the second middle shell 1022 houses a second internal fan 14, and a fan cover 15 is located on the right side. A radiator 16 is connected to the left end of the first middle shell 1021 and the first lower shell 1031. An air guide shroud 17 is provided at the air outlet of the upper end of the first internal fan 13. The air inlet of the air guide shroud 17 is connected to the air outlet of the first internal fan 13. The air outlet of the air guide shroud 17 is connected to the left end of the lower air duct. The right end of the lower air duct is connected to the gap between the third lower shell 1033 and the second internal fan 14. An air inlet is provided on the left side wall of the second internal fan 14. The air outlet at the upper end of the second internal fan 14 is connected to the right end of the upper air duct through the cavity formed between the upper shell 101, the first middle shell 1021 and the second middle shell 1022. The left end of the upper air duct is connected to the gap between the radiator 16 and the first internal fan 13. An air inlet is provided on the left side wall of the first internal fan 13. As can be seen from the above technical solution: the airflow from the outlet of the first inner fan 13 flows into the left end of the lower air duct through the air guide shroud 17, then flows into the gap between the third lower shell 1033 and the second inner fan 14 from the right end of the lower air duct, then flows into the second inner fan 14 through the air inlet on the left side wall of the second inner fan 14, and then flows into the cavity formed between the upper shell 101, the first middle shell 1021 and the second middle shell 1022 from the outlet of the second inner fan 14, and then flows into the cavity formed between the upper shell 101, the first middle shell 1021 and the second middle shell 1022 from the right end of the upper air duct. The airflow enters the upper air duct, then flows from the left end of the upper air duct into the gap between the radiator 16 and the first internal fan 13, and finally flows back into the interior of the first internal fan 13 through the air inlet on the left side wall of the first internal fan 13. When the airflow passes through the upper and lower air ducts, it will carry away the heat from the upper and lower surfaces of each lens in the lens module 4. When the airflow passes through the radiator 16, the heat in the airflow will be conducted to the radiator 16, and then dissipated to the outside of the optical engine through the radiator 16, thus achieving the purpose of heat dissipation for the entire optical engine interior.

[0028] In this embodiment, one bearing seat 8 is located on the top of the air guide shroud 17, and the other bearing seat 8 is located at the connection between the first part shell 1021 and the second part shell 1022 to support and fix the two rotating shafts 7.

[0029] 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.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A projector with side projection sharpness compensation function, characterized in that, Includes housing, light source board, light chamber, lens module, reflector, and projection lens. The light chamber, reflector, and lens module are disposed inside the housing. A projection port is provided on the upper left side of the housing. The right end of the projection lens is located inside the projection port. The reflector is obliquely disposed to the right of the projection lens. The lens module is located below the reflector. The light chamber is located below the lens module. The light source plate is installed below the housing. The lower end of the light chamber penetrates downward through the housing and is fitted onto the upper part of the light source plate. The lens module includes, from top to bottom, a rear glass, a rear heat-insulating glass, a screen frame assembly, a front heat-insulating glass, and a front glass, wherein the screen frame assembly is rotatably disposed inside the housing.

2. A projector with side projection sharpness compensation function according to claim 1, characterized in that, The shell comprises an upper shell, a middle shell, and a lower shell arranged sequentially from top to bottom. The projection port is located at the left end of the upper shell, and the reflector is located inside the upper shell. The rear lenticule, rear heat-insulating glass, front heat-insulating glass, and front lenticule are horizontally disposed inside the middle shell, and the screen frame assembly is rotatably disposed inside the middle shell. The light chamber is disposed inside the lower shell, the light source plate is installed below the lower shell, and the lower end of the light chamber penetrates the lower shell and is fitted onto the outside of the upper end of the light source plate.

3. A projector with side projection sharpness compensation function according to claim 2, characterized in that, The screen frame assembly includes a screen frame and a screen body disposed inside the screen frame. The left and right ends of the screen frame are respectively provided with rotating shafts. The inner shell is provided with bearing seats at positions corresponding to the two rotating shafts. The outer ends of the two rotating shafts are inserted into the inner shells of the two bearing seats. An arc-shaped rack is provided on one end of the left side wall of the screen frame. A motor seat is provided on the left side wall of the inner shell. A motor is provided on the motor seat. The outer end of the rotating shaft of the motor is inserted into the inner shell to the right and is provided with a gear. The gear meshes with the rack.

4. A projector with side projection sharpness compensation function according to claim 3, characterized in that, The two rotating shafts are respectively horizontally arranged at the middle positions of the left and right ends of the screen frame, the rack is longitudinally arranged at the rear end of the left side wall of the screen frame, and a control board is also arranged on the outer side wall of the housing, and the motor is controlled by the control board.

5. A projector with side projection sharpness compensation function according to claim 3, characterized in that, The lower shell includes a first lower shell, a second lower shell, and a third lower shell arranged sequentially from left to right. The upper ends of the first lower shell, the second lower shell, and the third lower shell are connected sequentially, and their lower ends are spaced apart from each other. The first lower shell is a frame structure with openings on the left and top. The second lower shell is a conical cylinder with openings at both the top and bottom. The third lower shell is a frame structure with openings on the right and top. The light chamber is disposed inside the second lower shell.

6. A projector with side projection sharpness compensation function according to claim 5, characterized in that, The middle shell includes a first middle shell and a second middle shell. The first middle shell and the second middle shell are rectangular frame structures. The first middle shell is arranged horizontally, and the second middle shell is arranged vertically at the right end of the first middle shell. The lower right corner of the first middle shell is connected to the upper left corner of the second middle shell. The rear Fresnel lens, the rear heat insulation glass, the screen frame assembly, the front heat insulation glass, and the front Fresnel lens are respectively arranged inside the first middle shell.

7. A projector with side projection sharpness compensation function according to claim 6, characterized in that, The first middle shell is located above the first lower shell and the second lower shell. The right side of the third lower shell is connected to the left side of the second middle shell. The upper shell is installed on the upper end of the first middle shell and the second middle shell.

8. A projector with side projection sharpness compensation function according to claim 7, characterized in that, The gaps between the rear plenum mirror and the rear heat-insulating glass, and between the rear heat-insulating glass and the screen frame assembly, form an upper airflow channel; the gaps between the screen frame assembly and the front heat-insulating glass, and between the front heat-insulating glass and the front plenum mirror, form a lower airflow channel. The first lower shell has a first internal fan installed inside, the second middle shell has a second internal fan installed inside, and a fan cover is installed on the right side. A radiator is connected to the left end of the first middle shell and the first lower shell. An air guide hood is provided at the air outlet of the upper end of the first internal fan. The air inlet of the air guide hood is connected to the air outlet of the first internal fan. The air outlet of the air guide hood is connected to the left end of the lower air duct. The right end of the lower air duct is connected to the gap between the third lower shell and the second internal fan. An air inlet is provided on the left side wall of the second internal fan. The air outlet at the upper end of the second internal fan is connected to the right end of the upper air duct through the cavity formed between the upper shell, the first middle shell, and the second middle shell. The left end of the upper air duct is connected to the gap between the radiator and the first internal fan. An air inlet is provided on the left side wall of the first internal fan.

9. A projector with side projection sharpness compensation function according to claim 8, characterized in that, One of the bearing seats is located on the top of the air guide shroud, and the other bearing seat is located at the connection between the first part of the inner shell and the second part of the inner shell.

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