Four-in-one screen frame assembly for projection light machine

Abstract

The utility model provides a four-in-one screen frame assembly used for a projection ray machine, comprising a first heat insulation glass, a heat insulation support, an LCD screen, a screen frame buckle, a screen frame, a second heat insulation glass and a Fresnel lens, the first heat insulation glass is arranged in a mounting groove at the lower end of the heat insulation support, the LCD screen is arranged in a mounting groove at the upper end of the heat insulation support, and the second heat insulation glass is arranged in a mounting groove at the lower end of the heat insulation support. The second heat insulation glass is arranged in the screen frame, the Fresnel lens is arranged in an installation groove in the upper end of the screen frame, the lower end face of the screen frame abuts against the upper end face of the heat insulation support, the area of an opening in the lower end of the screen frame is smaller than the area of the LCD screen, and the upper end and the lower end of the screen frame buckle are correspondingly buckled to the upper side of the second heat insulation glass and the lower side of the first heat insulation glass. A plurality of Fresnel lens buckles are arranged on the edge of the upper end face of the screen frame, and the first heat insulation glass, the heat insulation support, the LCD screen, the screen frame buckles, the screen frame, the second heat insulation glass and the Fresnel lens are assembled into a module, so that the installation precision of the whole module is improved, the possible light leakage phenomenon is effectively avoided, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to a four-in-one screen frame assembly for a projection optical engine. Background Technology

[0002] With the continuous development of technology and the advancement of projection technology, projectors have been widely used in conferences, teaching, and entertainment venues. However, existing projectors have complex structures, making assembly and disassembly difficult. Furthermore, their lenses are fragile and easily broken, making them prone to breakage during installation and removal. Additionally, the assembly of multiple components can lead to significant cumulative errors, potentially resulting in light leakage. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, this utility model provides a four-in-one screen frame assembly for a projection optical engine to solve the problems existing in the background art.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A four-in-one screen frame assembly for a projection optical engine includes a first heat-insulating glass, a heat-insulating bracket, an LCD screen, a screen frame buckle, a screen frame, a second heat-insulating glass, and a Fresnel lens.

[0006] The first heat-insulating glass is disposed in the mounting groove at the lower end of the heat-insulating bracket, the LCD screen is disposed in the mounting groove at the upper end of the heat-insulating bracket, the second heat-insulating glass is disposed inside the screen frame, the lenticular lens is disposed in the mounting groove at the upper end of the screen frame, the lower end face of the screen frame abuts against the upper end face of the heat-insulating bracket, and the opening area at the lower end of the screen frame is smaller than the area of ​​the LCD screen, the upper and lower ends of the screen frame buckle are correspondingly fastened to the upper side of the second heat-insulating glass and the lower side of the first heat-insulating glass, and several lenticular lens buckles are provided along the edge of the upper end face of the screen frame.

[0007] In one embodiment, the screen frame and the heat insulation bracket are both rectangular frame structures.

[0008] The lower end face of each side of the heat insulation bracket is provided with an upwardly recessed first step, and the four first steps are interconnected to form a mounting groove for installing the first heat insulation glass.

[0009] The inner edge of the upper surface of each side of the heat insulation bracket is provided with a downwardly recessed second step, and the four second steps are interconnected to form a mounting groove for mounting the LCD screen.

[0010] The inner edge of the upper surface of each side of the screen frame is provided with a downwardly recessed third step, and the four third steps are interconnected to form a mounting groove for installing the Fresnel lens.

[0011] At least two connecting plates are respectively provided on the inner walls of the two long sides of the screen frame, and a fourth step is provided at the top of the connecting plate. The second heat-insulating glass is installed on several of the fourth steps.

[0012] In one embodiment, the screen frame is fastened to the outside of the two short sides of the first and second heat-insulating glass. The two ends of the screen frame are respectively provided with screen frame fastening mounting holes. The screen frame fastener is in the shape of "[". The upper ends of the two screen frame fasteners pass through the screen frame fastening mounting holes and are fastened to the upper side of the second heat-insulating glass, and the lower ends are fastened to the lower side of the first heat-insulating glass.

[0013] In one embodiment, screen frame buckle mounting grooves are respectively provided on the outer side walls of the two short sides of the screen frame and the heat insulation bracket. The longitudinal part of the screen frame buckle is located in the screen frame buckle mounting groove, and the outer surfaces of the screen frame buckle, screen frame and heat insulation bracket on the same side are located on the same plane.

[0014] In one embodiment, the inner ends of several of the Foley lens clips extend inward and beyond the inner wall of the side of the screen frame. The corners above the inner ends of several Foley lens clips on one side of the screen frame are chamfered, and the corners below the inner ends of several Foley lens clips on the other side of the screen frame are chamfered.

[0015] In one embodiment, several through holes are arranged horizontally side by side on the two long sides of the screen frame and the heat insulation bracket. The number of through holes on the two long sides of the screen frame and the heat insulation bracket is the same, and their vertical positions correspond one-to-one.

[0016] In one embodiment, a first buckle plate is provided on the lower end surface of the two short sides of the screen frame, and a groove is provided on the outer surface of the two short sides of the heat insulation bracket at the position corresponding to the first buckle plate. A locking block that can be engaged with the first buckle plate is provided inside the groove.

[0017] In one embodiment, the outer surface of the short side located on the same side as the screen frame and the heat insulation bracket is on the same plane as the outer surface of the first buckle plate on the same side.

[0018] In one embodiment, a protrusion is provided on the outer wall of one of the long sides of the heat insulation bracket, and a second buckle is provided on the other long side of the heat insulation bracket and the outer edge of the upper surface of the protrusion, respectively. The upper end of the second buckle is fastened into the through hole located on the screen frame.

[0019] In one embodiment, a positioning notch is provided at the position corresponding to the second buckle plate on the edge of the through hole on one side of the screen frame. The longitudinal portion of the second buckle plate is located within the positioning notch. The outer surfaces of the long side of the screen frame and the heat insulation bracket on the same side are located on the same plane. The outer surface of the second buckle plate located inside the positioning notch is located on the same plane as the outer surfaces of the long side of the screen frame and the heat insulation bracket on the same side.

[0020] Compared with the prior art, the present invention provides a four-in-one screen frame assembly for a projection optical engine, which assembles a first heat-insulating glass, a heat-insulating bracket, an LCD screen, a screen frame buckle, a screen frame, a second heat-insulating glass, and a Fresnel lens into a single module, thereby improving the installation accuracy of the entire module and effectively avoiding possible light leakage. At the same time, by setting multiple through holes on the heat-insulating bracket and the screen frame, heat dissipation treatment of each lens is facilitated, thereby improving the heat dissipation effect of the entire module. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the longitudinal sectional structure;

[0023] Figure 3 This is a top view of the structure of this utility model;

[0024] Figure 4 This is an exploded view of the structure of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the heat insulation bracket in this utility model;

[0026] Figure 6 This is a schematic diagram of the right-side structure of this utility model. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] like Figure 1-5 As shown, for ease of description, the orientation references of "up", "down", "left", "right", "front" and "rear" in this utility model are attached. Figure 1 The directions shown are for reference only;

[0033] A four-in-one screen frame assembly for a projection optical engine includes a first heat-insulating glass 1, a heat-insulating bracket 2, an LCD screen 3, a screen frame buckle 4, a screen frame 5, a second heat-insulating glass 6, and a Fresnel lens 7.

[0034] The first heat-insulating glass 1 is installed in the mounting groove at the lower end of the heat-insulating bracket 2, the LCD screen 3 is installed in the mounting groove at the upper end of the heat-insulating bracket 2, the second heat-insulating glass 6 is installed inside the screen frame 5, and the Fresnel lens 7 is installed in the mounting groove at the upper end of the screen frame 5. The lower end face of the screen frame 5 abuts against the upper end face of the heat-insulating bracket 2, and the opening area at the lower end of the screen frame 5 is smaller than the area of ​​the LCD screen 3. The upper and lower ends of the screen frame buckle 4 are correspondingly fastened to the upper side of the second heat-insulating glass 6 and the lower side of the first heat-insulating glass 1. Several Fresnel lens buckles 8 are provided along the edge of the upper end face of the screen frame 5, and the Fresnel lens 7 is fixed by the Fresnel lens buckles 8. The first heat-insulating glass 1 and the second heat-insulating glass 6 are fixed by the screen frame buckle 4. At the same time, the screen frame buckle 4 also realizes the connection and fixation between the heat-insulating bracket 2 and the screen frame 5. On the other hand, the LCD screen 3 is installed in the mounting groove at the upper end of the heat-insulating bracket 2, and the lower end face of the screen frame 5 abuts against the upper end face of the heat-insulating bracket 2. The opening area at the lower end of the screen frame 5 is smaller than the area of ​​the LCD screen 3. Under the premise that the heat-insulating bracket 2 and the screen frame 5 are connected and fixed, the lower end of the screen frame 5 will play a limiting role on the LCD screen 3, thereby fixing the LCD screen 3 in the mounting groove at the upper end of the heat-insulating bracket 2.

[0035] In this embodiment, the screen frame 5 and the heat insulation bracket 2 are both rectangular frame structures.

[0036] The inner edge of the lower end face of each side of the heat insulation bracket 2 is provided with an upwardly recessed first step 21. The four first steps 21 are interconnected to form a mounting groove for installing the first heat insulation glass 1.

[0037] The inner edge of the upper surface of each side of the heat insulation bracket 2 is provided with a downwardly recessed second step 22. The four second steps 22 are interconnected to form a mounting groove for mounting the LCD screen 3.

[0038] Each side of the screen frame 5 has a recessed third step 51 along its inner edge on the upper surface. The four third steps 51 are interconnected to form a mounting groove for mounting the Fresnel lens 7.

[0039] Two connecting plates 9 are respectively provided on the inner walls of the two long sides of the screen frame 5. The top of the connecting plate 9 is provided with a fourth step 91, and the second heat insulation glass 6 is installed on the four fourth steps 91.

[0040] In this embodiment, the screen frame buckle 4 is fastened to the outside of the two short sides of the first heat-insulating glass 1 and the second heat-insulating glass 6. The two ends of the screen frame 5 are respectively provided with screen frame buckle mounting holes 52. The screen frame buckle 4 is in the shape of "[". The upper ends of the two screen frame buckles 4 pass through the screen frame buckle mounting holes 52 and are fastened to the upper side of the second heat-insulating glass 6, and the lower ends are fastened to the lower side of the first heat-insulating glass 1, thereby fixing the first heat-insulating glass 1 and the second heat-insulating glass 6.

[0041] Furthermore, screen frame 5 and heat insulation bracket 2 are respectively provided with screen frame buckle mounting grooves 10 on the outer walls of their two short sides. The longitudinal part of the screen frame buckle 4 is located in the screen frame buckle mounting groove 10, and the outer surfaces of the screen frame buckle 4, screen frame 5 and heat insulation bracket 2 on the same side are located on the same plane. In this way, after the module assembled from the first heat insulation glass 1, heat insulation bracket 2, LCD screen 3, screen frame buckle 4, screen frame 5, second heat insulation glass 6 and Fresnel lens 7 is placed into the interior of the projector optical engine, the gap between this side of the entire module and the inner wall of the projector optical engine is smaller, which is beneficial to the sealing of the projector optical engine and its internal partitioning and heat dissipation.

[0042] In this embodiment, the inner ends of the four Fresnel lens clips 8 extend inward and beyond the inner wall of the side of the screen frame 5. The corners above the inner ends of the two Fresnel lens clips 8 on one side of the screen frame 5 are chamfered, and the corners below the inner ends of the two Fresnel lens clips 8 on the other side of the screen frame 5 are chamfered. Therefore, when installing the Fresnel lens 7, first insert one side of the Fresnel lens 7 (the side with the chamfered corner below the inner end of the Fresnel lens clip 8) into the mounting groove at the upper end of the screen frame 5, because this side of the Fresnel lens 7... The inner end of the lens clip 8 is chamfered at the corner, which allows the end of the lens 7 that is not inserted into the mounting slot at the top of the screen frame 5 to be raised at a greater angle, thus facilitating the insertion of the lens 7. At the same time, since the inner ends of the two lens clips 8 on the other side of the screen frame 5 are chamfered at the corners, the other side of the lens 7 can be more easily inserted into the mounting slot at the top of the screen frame 5 via the chamfered corners at the inner ends of the lens clips 8, thereby realizing the installation and fixation of the lens 7.

[0043] In this embodiment, three through holes 11 are arranged horizontally side by side on the two long sides of the screen frame 5 and the heat insulation bracket 2. The number of through holes 11 on the two long sides of the screen frame 5 and the heat insulation bracket 2 is the same, and their vertical positions correspond one-to-one. By setting three through holes 11 on the two long sides of the screen frame 5 and the heat insulation bracket 2, it is convenient for the heat dissipation airflow inside the projector optical engine to pass through, thereby removing the heat from the first heat insulation glass 1, the LCD screen 3, the second heat insulation glass 6 and the Fresnel lens 7 through the airflow, which is conducive to the continuous and stable operation of the first heat insulation glass 1, the LCD screen 3, the second heat insulation glass 6 and the Fresnel lens 7.

[0044] In this embodiment, a first buckle plate 53 is provided on the lower end surface of the two short sides of the screen frame 5, and a groove 23 is provided on the outer surface of the two short sides of the heat insulation bracket 2 at the position corresponding to the first buckle plate 53. A locking block 24 that can be fastened to the first buckle plate 53 is provided inside the groove 23. By providing the first buckle plate 53 and the locking block 24, the connection strength between the screen frame 5 and the heat insulation bracket 2 is further strengthened.

[0045] In this embodiment, the outer surface of the short side located on the same side as the screen frame 5 and the heat insulation bracket 2 is on the same plane as the outer surface of the first buckle plate 53 on the same side. Similarly, this is also to make the gap between this side of the entire module and the inner wall of the projector optical engine smaller after the module assembled by the first heat insulation glass 1, heat insulation bracket 2, LCD screen 3, screen frame buckle 4, screen frame 5, second heat insulation glass 6 and Fresnel lens 7 is placed inside the projector optical engine, thereby facilitating the sealing of the projector optical engine and its internal partitioning and heat dissipation.

[0046] In this embodiment, a protrusion 25 is provided on the outer wall of one of the long sides of the heat insulation bracket 2, and a second fastening plate 26 is provided on the other long side of the heat insulation bracket 2 and the outer edge of the upper surface of the protrusion 25. Two second fastening plates 26 are provided on the protrusion 25, and three second fastening plates 26 are provided on the other side. The upper ends of the five second fastening plates 26 are respectively fastened into the through holes 11 located on the screen frame 5. The purpose of providing the second fastening plates 26 is also to improve the connection strength between the screen frame 5 and the heat insulation bracket 2, and to avoid gaps between the screen frame 5 and the heat insulation bracket 2, which would lead to light leakage.

[0047] In this embodiment, a positioning notch is provided at the position corresponding to the second buckle plate 26 on the edge of the through hole 11 on one side of the screen frame 5. The longitudinal part of the second buckle plate 26 is located in the positioning notch. The outer surface of the long side of the screen frame 5 and the heat insulation bracket 2 on the same side is on the same plane. Similarly, the outer surface of the second buckle plate 26 located inside the positioning notch is on the same plane as the outer surface of the long side of the screen frame 5 and the heat insulation bracket 2 on the same side. Similarly, this is also to make the gap between this side of the entire module and the inner wall of the projector optical engine smaller after the module assembled by the first heat insulation glass 1, the heat insulation bracket 2, the LCD screen 3, the screen frame buckle 4, the screen frame 5, the second heat insulation glass 6 and the Fresnel lens 7 are put into the interior of the projector optical engine, thereby facilitating the sealing of the projector optical engine and its internal partitioning and heat dissipation.

[0048] 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.

[0049] 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 four-in-one screen frame assembly for a projection optical engine, characterized in that, Includes first heat-insulating glass, heat-insulating bracket, LCD screen, screen frame buckle, screen frame, second heat-insulating glass, and lenticule. The first heat-insulating glass is disposed in the mounting groove at the lower end of the heat-insulating bracket, the LCD screen is disposed in the mounting groove at the upper end of the heat-insulating bracket, the second heat-insulating glass is disposed inside the screen frame, the lenticular lens is disposed in the mounting groove at the upper end of the screen frame, the lower end face of the screen frame abuts against the upper end face of the heat-insulating bracket, and the opening area at the lower end of the screen frame is smaller than the area of ​​the LCD screen, the upper and lower ends of the screen frame buckle are correspondingly fastened to the upper side of the second heat-insulating glass and the lower side of the first heat-insulating glass, and several lenticular lens buckles are provided along the edge of the upper end face of the screen frame.

2. The four-in-one screen frame assembly for a projection optical engine according to claim 1, characterized in that, The screen frame and the heat insulation bracket are both rectangular frame structures. The lower end face of each side of the heat insulation bracket is provided with an upwardly recessed first step, and the four first steps are interconnected to form a mounting groove for installing the first heat insulation glass. The inner edge of the upper surface of each side of the heat insulation bracket is provided with a downwardly recessed second step, and the four second steps are interconnected to form a mounting groove for mounting the LCD screen. The inner edge of the upper surface of each side of the screen frame is provided with a downwardly recessed third step, and the four third steps are interconnected to form a mounting groove for installing the Fresnel lens. At least two connecting plates are respectively provided on the inner walls of the two long sides of the screen frame, and a fourth step is provided at the top of the connecting plate. The second heat-insulating glass is installed on several of the fourth steps.

3. A four-in-one screen frame assembly for a projection optical engine according to claim 2, characterized in that, The screen frame is fastened to the outside of the two short sides of the first and second heat-insulating glass. The two ends of the screen frame are respectively provided with screen frame fastener mounting holes. The screen frame fastener is in the shape of "[". The upper ends of the two screen frame fasteners pass through the screen frame fastener mounting holes and are fastened to the upper side of the second heat-insulating glass, and the lower ends are fastened to the lower side of the first heat-insulating glass.

4. A four-in-one screen frame assembly for a projection optical engine according to claim 3, characterized in that, The outer walls of the two short sides of the screen frame and the heat insulation bracket are respectively provided with screen frame buckle mounting grooves. The longitudinal part of the screen frame buckle is located in the screen frame buckle mounting groove, and the outer surfaces of the screen frame buckle, screen frame and heat insulation bracket on the same side are located on the same plane.

5. A four-in-one screen frame assembly for a projection optical engine according to claim 2, characterized in that, The inner ends of several of the Vimentin clips extend inward and beyond the inner wall of the side of the screen frame. The corners above the inner ends of several Vimentin clips on one side of the screen frame are chamfered, and the corners below the inner ends of several Vimentin clips on the other side of the screen frame are chamfered.

6. A four-in-one screen frame assembly for a projection optical engine according to claim 2, characterized in that, Several through holes are arranged horizontally side by side on the two long sides of the screen frame and the heat insulation bracket. The number of through holes on the two long sides of the screen frame and the heat insulation bracket is the same, and their vertical positions correspond one-to-one.

7. A four-in-one screen frame assembly for a projection optical engine according to claim 2, characterized in that, The lower end surfaces of the two short sides of the screen frame are respectively provided with first buckle plates, and the outer surfaces of the two short sides of the heat insulation bracket are respectively provided with grooves at positions corresponding to the first buckle plates. The grooves are provided with locking blocks that can be engaged with the first buckle plates.

8. A four-in-one screen frame assembly for a projection optical engine according to claim 7, characterized in that, The outer surface of the short side located on the same side as the screen frame and the heat insulation bracket is on the same plane as the outer surface of the first buckle plate on the same side.

9. A four-in-one screen frame assembly for a projection optical engine according to claim 7, characterized in that, A protruding strip is provided on the outer wall of one of the long sides of the heat insulation bracket, and a second buckle is provided on the other long side of the heat insulation bracket and the outer edge of the upper surface of the protruding strip, respectively. The upper end of the second buckle is fastened into the through hole located on the screen frame.

10. A four-in-one screen frame assembly for a projection optical engine according to claim 9, characterized in that, A positioning notch is provided at the position corresponding to the second buckle plate on the edge of the through hole on one side of the screen frame. The longitudinal part of the second buckle plate is located in the positioning notch. The outer surface of the long side of the screen frame and the heat insulation bracket on the same side is on the same plane. The outer surface of the second buckle plate located inside the positioning notch is on the same plane as the outer surface of the long side of the screen frame and the heat insulation bracket on the same side.

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