CN213023921U - Projection equipment - Google Patents

Abstract

The utility model provides a projection equipment relates to projection technical field for solve the projection equipment among the correlation technique and remove inconvenient problem. The projection equipment comprises a base, a fixing frame, a projection screen and a projector, wherein the fixing frame is arranged on the base, the projection screen is positioned above the base and arranged on the fixing frame, and the projector is arranged on the base and configured to project a projection beam on the projection screen. The utility model discloses can be used to desktop projection equipment.

Description

Projection equipment

Technical Field

The utility model relates to a projection technology field especially relates to a projection equipment.

Background

With the improvement of science and technology, projection devices are widely applied to work and life of people, such as education, office, household or entertainment. When the projection equipment works, the projector projects the projection light beam on the projection screen to form a projection picture for people to watch.

In a related art, a projection screen of a projection apparatus is disposed on a wall in a room, and a projector is suspended from a ceiling in the room, and if the projection apparatus is to be moved to another place, the projection screen and an installation carrier of the projector need to be searched again and a position between the projection screen and the installation carrier needs to be adjusted again, so that the movement of the projection apparatus is very inconvenient, and the projection apparatus can only be installed in fixed places such as a meeting room and a classroom.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a projection equipment for solve the projection equipment among the correlation technique and remove inconvenient problem.

In order to achieve the above object, an embodiment of the present invention provides a projection apparatus, which includes a base, a fixing frame, a projection screen, a projector, and an adjusting member, wherein the fixing frame is disposed on the base; the projection screen is positioned above the base and is arranged on the fixed frame; the projector is configured to project a projection beam onto the projection screen; the projector comprises a shell, wherein the bottom wall of the shell is provided with an adjusting screw hole; the adjusting part is rotatably arranged on the base, extends along the vertical direction and is matched with the adjusting screw hole, so that the position of the projector relative to the base in the vertical direction can be adjusted.

The embodiment of the utility model provides a projection equipment, through setting up the mount for projector, projection screen, mount, base connect and form a whole, if need move this projection equipment to other places, for example move this projection equipment have office's desktop to meeting room, just can directly move this projection equipment to other places, and need not to look for the installation carrier of projector and projection screen again, thereby made things convenient for the removal of this projection equipment greatly, and then can improve this projection equipment's range of application; meanwhile, the adjusting piece is arranged on the base, so that when the projection picture projected by the projector is not matched with the projection screen, the position of the projector relative to the base in the vertical direction can be adjusted by rotating the adjusting piece, the projection picture is matched with the projection screen, and the quality of the projection picture is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a projection apparatus according to some embodiments of the present invention;

FIG. 2 is a rear view of the projection device shown in FIG. 1;

FIG. 3 is an exploded view of the projection device shown in FIG. 1;

FIG. 4 is a schematic view of the projector housing of FIG. 3 with the upper housing portion removed;

FIG. 5 is an exploded view of the base and the fixing frame of the projection apparatus in FIG. 1;

FIG. 6 is a schematic view of the first and second adjustment members being connected to the bottom wall;

FIG. 7 is a partial enlarged view of the left side portion of FIG. 6;

FIG. 8 is a first schematic diagram of a left-right pitch adjustment of a projector;

FIG. 9 is a second schematic diagram of the tilt adjustment of the projector;

FIG. 10 is a bottom view of the base of FIG. 1;

FIG. 11 is a schematic view of another arrangement of the first and second adjustment members on the bottom wall;

FIG. 12 is a schematic view of a third arrangement of the first and second adjustment members on the bottom wall;

FIG. 13 is a cross-sectional view A-A of FIG. 2;

FIG. 14 is a schematic view of the projection apparatus of FIG. 13 with the projector removed;

FIG. 15 is a cross-sectional view C-C of FIG. 2;

fig. 16 is a cross-sectional view B-B of fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the term "coupled" may refer to a direct connection, an indirect connection through intervening media, or a connection between two elements; the specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 to 5 show a schematic structural diagram of a projection apparatus according to some embodiments of the present invention, fig. 1 shows a schematic structural diagram of the projection apparatus shown in fig. 1, fig. 2 shows a back view of the projection apparatus shown in fig. 1, fig. 3 shows an exploded view of the projection apparatus shown in fig. 1, fig. 4 shows a schematic diagram of a case 51 of the projector 5 shown in fig. 3 with an upper half case 52 removed, and fig. 5 shows an exploded view of the base 1 and the fixing frame 3. The projection equipment comprises a base 1, an adjusting piece 2, a fixing frame 3, a projection screen 4 and a projector 5;

as shown in fig. 4 and 5, the base 1 is plate-shaped, and four supporting legs 11 are provided at a lower side of the base 1, and the supporting legs 11 may be made of rubber material, so that when the base 1 is placed on a supporting body such as a desktop, friction between the supporting legs 11 and the supporting body may be increased, thereby preventing the base 1 from moving well.

Of course, the shape of the base 1 may be other than a plate shape, a block shape, or the like, and is not particularly limited herein.

The adjusting member 2 includes two first adjusting members 21 rotatably provided at one end portion of the base 1 in the first horizontal direction X, and two second adjusting members 22 rotatably provided at the other end portion of the base 1 in the first horizontal direction X; the first horizontal direction X coincides with the thickness direction of the projection screen 4.

The two first adjusting pieces 21 extend along the vertical direction and are arranged at intervals along the second horizontal direction Y, and the two second adjusting pieces 22 extend along the vertical direction and are arranged at intervals along the second horizontal direction Y; the second horizontal direction Y is perpendicular to the first horizontal direction X.

As shown in fig. 3, the projector 5 is located above the base 1, the projector 5 includes a housing 51, the housing 51 includes an upper half 52 and a lower half 55, the upper half 52 includes a top wall 53 and a first side wall 54 disposed at a periphery of the top wall 53, and the top wall 53 is provided with a control key 531 and a projection opening 532 for projecting a projection light beam.

As shown in fig. 3 and 4, the lower half-shell 55 includes a bottom wall 56 and a second side wall 57 disposed at a periphery of the bottom wall 56, the bottom wall 56 and the second side wall 57 are connected to the second side wall 57 through fasteners such as screws, so that the bottom wall 56 can be conveniently replaced when the bottom wall 56 is damaged, the second side wall 57 is connected to the first side wall 54 through fasteners such as screws, so that the upper half-shell 52 and the lower half-shell 55 are combined to form a shell, and when the projection optics inside the casing 51 is damaged, the upper half-shell 52 and the lower half-shell 55 can be separated to facilitate replacement and maintenance of the projection optics.

As shown in fig. 4, the bottom wall 56 is provided with an adjusting screw hole 561, and the adjusting screw hole 561 includes two first sub screw holes 562 located at one end of the bottom wall 56 along the first horizontal direction X and two second sub screw holes 563 located at the other end of the bottom wall 56 along the first horizontal direction X. The two first sub screw holes 562 are spaced apart along the second horizontal direction Y, and the two second sub screw holes 563 are spaced apart along the second horizontal direction Y. As shown in fig. 6, fig. 6 is a schematic view illustrating the connection of the first adjusting member 21 and the second adjusting member 22 with the bottom wall 56. The two first adjusting members 21 are correspondingly matched with the two first sub screw holes 562 one by one, and the two second adjusting members 22 are correspondingly matched with the two second sub screw holes 563 one by one.

As shown in fig. 2, 13 and 14, fig. 13 is a sectional view taken along a line a-a of fig. 2, and fig. 14 is a schematic view of the projection apparatus of fig. 13 with the projector 5 removed. The fixing frame 3 is arranged on the base 1, the projection screen 4 is in a plate shape and is positioned above the base 1, and the projection screen 4 is arranged on the fixing frame 3. Through setting up mount 3, make projector 5 like this, projection screen 4, mount 3, base 1 forms a whole, if want to remove this projection equipment to other places, for example remove this projection equipment has the desktop of office to the meeting room, then can directly remove this projection equipment to other places, and need not to look for projector 5 and projection screen 4's installation carrier again, thereby made things convenient for this projection equipment's removal greatly, and then can improve this projection equipment's range of application, for example this projection equipment not only can place and use as the computer screen on the desktop, also can place and use as the TV on the TV cabinet of family room at home.

When the projection device works, if the projection picture projected by the projector 5 is not matched with the projection screen 4, the position of the projector 5 relative to the base 1 in the vertical direction can be adjusted by rotating the adjusting piece 2, so that the projection picture is matched with the projection screen 4, for example, as shown in fig. 8 and 9, fig. 8 and 9 are schematic diagrams of left and right pitching adjustment of the projector 5. The left-side first adjusting piece 21 and the right-side second adjusting piece 22 are rotated or the right-side first adjusting piece 21 and the right-side second adjusting piece 22 are rotated, so that the bottom wall 56 can be subjected to horizontal and vertical pitch adjustment, and further, the projector 5 can be subjected to horizontal and vertical pitch adjustment; as shown in fig. 5 and 6, the front first adjusting member 21 and the front second adjusting member 22 can be rotated or the rear first adjusting member 21 and the rear second adjusting member 22 can be rotated to pitch the bottom wall 56, and thus the projector 5; by rotating the two first adjusting members 21 and the two second adjusting members 22, the bottom wall 56 can be adjusted in the vertical direction, and thus the projector 5 can be adjusted in the vertical direction.

In some embodiments, as shown in fig. 6, two first adjusting members 21 are respectively located on both sides of the first plane 58, and two second adjusting members 22 are respectively located on both sides of the first plane 58; the first plane 58 is a center plane of the projector 5 in the second horizontal direction Y. Through the arrangement, the projector 5 can keep stress balance in the second horizontal direction Y, and the situation that the projector 5 inclines due to the stress imbalance to influence the adjusting accuracy of the first adjusting piece 21 and the second adjusting piece 22 is avoided.

Besides the quadrangular arrangement shown in fig. 5, the first and second adjusting members 21, 22 may also have a triangular arrangement in some embodiments, as shown in fig. 11, and fig. 11 is a schematic view of another arrangement of the first and second adjusting members 21, 22 on the bottom wall 56. Along the first horizontal direction X, two first adjusting parts 21 arranged at intervals along the second horizontal direction Y are rotatably arranged at one end of the base 1, and a second adjusting part 22 is arranged at the other end of the base 1. Alternatively, as shown in fig. 12, fig. 12 is another schematic layout of the first adjusting member 21 and the second adjusting member 22 on the bottom wall 56. Along the first horizontal direction X, one end of the base 1 is rotatably provided with a first adjusting member 21, and the other end of the base 1 is provided with two second adjusting members 22 arranged at intervals along the second horizontal direction Y. In this way, when the projection screen 4 does not coincide with the projection screen, the right-left pitch adjustment, the front-back pitch adjustment, and the vertical position adjustment of the projector 5 can be performed by adjusting one or more of the first adjuster 21 and the second adjuster 22, so that the projection screen 4 does coincide with the projection screen.

In some embodiments, in order to facilitate the rotation of the first adjusting member 21, as shown in fig. 5, 6 and 7, the first adjusting member 21 includes a first adjusting wheel 211, a first screw 212 coaxially fixed on an upper side of the first adjusting wheel 211, and a first connecting rod 213 coaxially fixed on a lower side of the first adjusting wheel 211, the first screw 212 is engaged with a first sub screw hole 562, and the first connecting rod 213 is rotatably disposed on the base 1. Therefore, when the position of the projector 5 is adjusted, the first screw 212 can be rotated by rotating the first adjusting wheel 211, and other tools are not needed, which is very convenient.

The rotatable connection structure of the first connection column 213 and the base 1 is not exclusive, and in some embodiments, as shown in fig. 7, fig. 7 is a partially enlarged view of the left portion in fig. 6. The base 1 has a first connecting through hole 12, the first connecting post 213 is rotatably engaged with the first connecting through hole 12, and the lower end surface of the first connecting post 213 has a first connecting screw 2131. The projection apparatus further includes a first connecting fastener 131 and a first blocking piece 132, the first blocking piece 132 is located at the lower end of the first connecting through hole 12, the first connecting fastener 131 passes through the first blocking piece 132 to be connected with the first connecting screw hole 2131, and the head of the first connecting fastener 131 abuts against the first blocking piece 132, so as to axially limit the whole first adjusting member 21.

The first connecting fastener 131 may be a screw or a bolt, and is not limited in detail herein.

In other embodiments, the first connecting column 213 may also be rotatably connected to the base 1 through a bearing, specifically, the interference of the bearing is disposed in the first connecting through hole 12, and the first connecting column 213 is in interference fit with the inner ring of the bearing. Compared with the embodiment that the first connecting column 213 is rotatably connected to the base 1 through a bearing, in the embodiment shown in fig. 7, the first connecting column 213 is axially positioned by the first connecting fastener 131 and the first blocking piece 132, so as to rotatably connect to the base 1.

In some embodiments, in order to prevent the first adjusting part 21 from being separated from the bottom wall 56 of the projector 5 during the adjustment process, as shown in fig. 7, the projection apparatus further includes a first limit fastener 141, the upper end surface of the first screw 212 is provided with a first limit screw hole 2121, the first limit fastener 141 is matched with the first limit screw hole 2121, and the size of the head of the first limit fastener 141 is larger than the size of the first sub screw hole 562 in the horizontal direction. Because the size of the head of the first position-limiting fastener 141 is larger than the size of the first sub-screw hole 562 in the horizontal direction, the head of the first position-limiting fastener 141 can be clamped with the edge of the first sub-screw hole 562 along with the rotation of the first adjusting member 21, so as to prevent the first screw 212 from being separated from the base 1, and thus, the smooth position adjustment of the projector 5 in the projection device is ensured.

The first limit fastener 141 may be a screw or a bolt, and is not limited in detail herein.

In some embodiments, in order to facilitate the operator to rotate the first adjusting member 21, as shown in fig. 7, the base 1 is provided with a first boss 151, the first connecting through hole 12 is provided on the first boss 151, the first adjusting wheel 211 is located on the top surface of the first boss 151, and the edge region of the first adjusting wheel 211 is located outside the first boss 151. Since the first adjusting wheel 211 is located on the top surface of the first boss 151 and the edge area of the first adjusting wheel 211 is located outside the first boss 151, it is convenient for the operator to contact the edge of the first adjusting wheel 211 with his hand to rotate the first adjusting member 21. Meanwhile, the contact area between the first adjusting wheel 211 and the top surface of the first boss 151 is reduced, and the friction between the first adjusting wheel 211 and the top surface of the first boss 151 is reduced, so that the force required for rotating the first adjusting member 21 is reduced.

In some embodiments, to facilitate the operator's turning of the first adjustment member 21, as shown in fig. 4 and 5, the edge area of the first adjustment wheel 211 extends beyond the edge of the base 1. With this arrangement, the hand of the operator can conveniently contact the first adjustment wheel 211 and rotate the first adjustment member 21 without using other tools.

In some embodiments, to further facilitate the operator's rotation of the first adjustment member 21, the first adjustment wheel 211 is a gear, as shown in FIG. 7. Since the edge of the gear has a plurality of teeth, friction between the hand of the operator and the first adjusting wheel 211 can be increased, thereby facilitating the operator to rotate the first adjusting member 21.

In some embodiments, in order to facilitate the rotation of the second adjusting member 22, as shown in fig. 5, 6 and 7, the second adjusting member 22 includes a second adjusting wheel 221, a second screw 222 coaxially fixed on an upper side of the second adjusting wheel 221, and a second connecting column 223 coaxially fixed on a lower side of the second adjusting wheel 221, the second screw 222 is engaged with the second sub-screw hole 563, and the second connecting column 223 is rotatably disposed on the base 1. Therefore, when the position of the projector 5 is adjusted, the second screw 222 can be rotated by rotating the second adjusting wheel 221, and other tools are not needed, which is very convenient.

The rotatable connection structure of the second connection column 223 and the base 1 is not unique, and in some embodiments, as shown in fig. 7, a second connection through hole 16 is formed on the base 1, the second connection column 223 is rotatably matched with the second connection through hole 16, and a second connection screw hole 2231 is formed on the lower end surface of the second connection column 223. The projection apparatus further includes a second fastening member 171 and a second blocking piece 172, the second blocking piece 172 is located at the lower end of the second connecting through hole 16, the second fastening member 171 passes through the second blocking piece 172 to be connected with the second connecting screw hole 2231, and the head of the second fastening member 171 abuts against the second blocking piece 172, so as to axially limit the whole second adjusting member 22.

The second connecting fastener 171 may be a screw or a bolt, and is not limited in this respect.

In other embodiments, the second connection column 223 can also be rotatably connected to the base 1 through a bearing, specifically, the interference of the bearing is disposed in the second connection through hole 16, and the second connection column 223 is in interference fit with the inner ring of the bearing. Compared with the embodiment that the second connecting column 223 is rotatably connected with the base 1 through a bearing, in the embodiment shown in fig. 7, the second connecting column 223 is axially positioned through the second connecting fastener 171 and the second blocking piece 172, so as to rotatably connect with the base 1.

In some embodiments, in order to prevent the second adjusting part 22 from being separated from the bottom wall 56 of the projector 5 during the adjustment process, as shown in fig. 7, the projection apparatus further includes a second limit fastener 142, an upper end surface of the second screw 222 is provided with a second limit screw hole 2221, the second limit fastener 142 is matched with the second limit screw hole 2221, and a size of a head of the second limit fastener 142 is larger than a size of the second sub screw hole 563 in the horizontal direction. Because the size of the head of the second limit fastener 142 is larger than the size of the second sub screw hole 563 in the horizontal direction, the head of the second limit fastener 142 can be clamped with the edge of the second sub screw hole 563 along with the rotation of the second adjusting member 22, so as to prevent the second screw 222 from being separated from the base 1, thereby ensuring the smooth position adjustment of the projector 5 in the projection apparatus.

The second limit fastener 142 may be a screw or a bolt, and is not limited in this respect.

In some embodiments, in order to facilitate the operator to rotate the second adjusting member 22, as shown in fig. 7, the base 1 is provided with a second boss 152, the second connecting through hole 16 is provided on the second boss 152, the second adjusting wheel 221 is located on the top surface of the second boss 152, and the edge region of the second adjusting wheel 221 is located outside the second boss 152. Since the second adjustment wheel 221 is located on the top surface of the second boss 152, and the edge region of the second adjustment wheel 221 is located outside the second boss 152, it is convenient for the operator to contact the edge of the second adjustment wheel 221 with his hand to rotate the second adjustment member 22. Meanwhile, the contact area between the second adjusting wheel 221 and the top surface of the second boss 152 is reduced, and the friction between the second adjusting wheel 221 and the top surface of the second boss 152 is reduced, so that the force required for rotating the second adjusting member 22 is reduced.

In some embodiments, to facilitate the operator's rotation of the second adjustment member 22, as shown in fig. 4 and 10, fig. 10 is a bottom view of the base 1 of fig. 1. The base 1 is provided with an adjusting opening 18 which penetrates through the base 1 along the vertical direction, and the second adjusting wheel 221 is located at the edge of the adjusting opening 18. Thus, during adjustment, the operator can extend the handle into the adjustment opening 18 to rotate the second adjustment wheel 221, thereby adjusting the position of the projector 5. In addition, by providing the adjustment opening 18, it is not necessary to extend the edge area of the second adjustment wheel 221 beyond the edge of the base 1, so as to avoid affecting the appearance of the projection apparatus, and then the second adjustment wheel 221 can be disposed at the front side of the base 1.

In some embodiments, to further facilitate the operator's rotation of the second adjustment member 22, the second adjustment wheel 221 is a gear as shown in FIG. 7. Since the edge of the gear has a plurality of teeth, the friction between the hand of the operator and the second adjusting wheel 221 can be increased, thereby facilitating the operator to rotate the second adjusting member 22.

In some embodiments, as shown in fig. 2, 3 and 4, the fixing frame 3 includes a connecting portion 31 connected to the base 1, and a fixing portion 32 connected to the connecting portion 31, the fixing portion 32 is plate-shaped, and the projection screen 4 and the fixing portion 32 are stacked and connected to each other by a connecting member 6 and the fixing portion 32. By stacking the plate-shaped fixing portion 32 on the projection screen 4, the fixing portion 32 can have a larger contact area with the projection screen 4, so that the projection screen 4 can be better supported to maintain the flatness of the projection screen 4.

Where the connecting member 6 is not exclusive in construction, in some embodiments, as shown in fig. 2, 15 and 16, fig. 15 is a cross-sectional view C-C of fig. 2, and fig. 16 is a cross-sectional view B-B of fig. 2. The connecting piece 6 comprises a connecting plate 61, a first fastening piece 62 and a second fastening piece 63, the connecting plate 61 is arranged on one side of the fixing part 32 far away from the projection screen 4 in a stacking mode, two ends of the connecting plate 61 in the horizontal direction respectively exceed the edge of the fixing part 32, and a first through hole 611 is formed in the end of the connecting plate 61 in the horizontal direction; the projection screen 4 is provided with a first threaded hole 41, as shown in fig. 16, the first fastening member 62 passes through the first through hole 611 to be connected with the first threaded hole 41, and the head of the first fastening member 62 is clamped with the edge of the first through hole 611.

A second through hole 612 is formed in a portion of the connecting plate 61 opposite to the fixing portion 32, a second threaded hole 321 is formed in the fixing portion 32, as shown in fig. 15, the second fastening member 63 passes through the second through hole 612 to be connected with the second threaded hole 321, and a head of the second fastening member 63 is clamped with an edge of the second through hole 612.

The first fastening member 62 and the second fastening member 63 may be screws or bolts, and are not limited in particular.

In other embodiments, the connecting member 6 may also be an adhesive film disposed between the projection screen 4 and the fixing portion 32 to adhere the projection screen 4 and the fixing portion 32. Compared with the adhesive film, when the connecting member 6 includes the connecting plate 61, the first fastening member 62, and the second fastening member 63, not only the connection between the projection screen 4 and the fixing frame 3 is firmer, but also the mounting and dismounting between the projection screen 4 and the fixing frame 3 are more convenient.

In some embodiments, in order to ensure the accuracy of the position of the projection screen 4, as shown in fig. 2, the first through hole 611 and the second through hole 612 are both kidney-shaped holes, the length direction of the first through hole 611 corresponds to the vertical direction, and the length direction of the second through hole 612 corresponds to the horizontal direction. Through the arrangement, when the projection screen 4 is installed, the position of the projection screen 4 between the connecting plates 61 can be finely adjusted in the vertical direction, and the position between the connecting plates 61 and the fixing frame 3 can be finely adjusted in the horizontal direction, so that the position accuracy of the projection screen 4 relative to the fixing frame 3 in the horizontal direction and the vertical direction can be ensured, and further, the projection picture of the projector 5 can be better matched with the projection screen 4.

Of course, besides the arrangement shown in fig. 2, the length direction of the first through hole 611 may also coincide with the horizontal direction, and the length direction of the second through hole 612 may also coincide with the vertical direction, so that the position accuracy of the projection screen 4 relative to the fixing frame 3 in the horizontal direction and the vertical direction can also be ensured.

In some embodiments, in order to greatly adjust the vertical positions of the projection screen 4 and the fixing frame 3, as shown in fig. 2, the number of the second threaded holes 321 is multiple, and the multiple second threaded holes 321 are arranged at intervals along the vertical direction. When the position of the projection screen 4 in the vertical direction relative to the fixed frame 3 needs to be adjusted greatly after the projector 5 is changed in model, the connection between the second fastening piece 63 and the different second threaded hole 321 can be changed to adjust the position of the projection screen 4 in the vertical direction relative to the fixed frame 3, so that the projection picture of the projector 5 is matched with the projection screen 4, for example, when the position of the projection screen 4 needs to be raised, the position of the projection screen 4 can be raised by connecting the second fastening piece 63 with the second threaded hole 321 positioned above; to lower the position of the projection screen 4, the second fastening member 63 is coupled to the second screw hole 321 located below, so as to lower the position of the projection screen 4.

In some embodiments, in order to improve the connection between the projection screen 4 and the fixing portion 32 more firmly, as shown in fig. 2, the number of the second through holes 612 is two, the two second through holes 612 are arranged at intervals along the horizontal direction, a plurality of rows of the second threaded holes 321 are provided, the plurality of rows of the second threaded holes 321 are arranged along the vertical direction, each row includes two second threaded holes 321 arranged along the horizontal direction, the number of the second fastening members 63 is multiple, and each second fastening member 63 passes through the corresponding second through hole 612 and is connected with the corresponding second threaded hole 321. Through setting up like this, every connecting plate 61 all is connected with fixed part 32 through two second fasteners 63, has improved the joint strength of connecting plate 61 with fixed part 32 like this to make the connection between projection screen 4 and the fixed part 32 more firm.

In some embodiments, in order to further improve the connection between the projection screen 4 and the fixing portion 32 more firmly, as shown in fig. 3, the number of the connection plates 61 is multiple, and the multiple connection plates 61 are arranged in the vertical direction; two ends of each connecting plate 61 along the horizontal direction respectively exceed the edge of the fixing part 32 and are connected with the projection screen 4 through first fasteners 62; a portion of each connecting plate 61 opposite to the fixing portion 32 is connected to the fixing portion 32 by a second fastening member 63. Projection screen 4 is connected with fixed part 32 through a plurality of connecting plates 61, can be so that projection screen 4 is inseparabler in the laminating of vertical ascending everywhere with fixed part 32, avoids projection screen 4 uneven in size of clearance between vertical ascending and fixed part 32, not only can guarantee projection screen 4's planarization, but also can further improve the firm in connection between projection screen 4 and the fixed part 32.

In some embodiments, as shown in fig. 5, 13 and 14, the base 1 has a third through hole 191, the bottom end of the connecting portion 31 has a third threaded hole 311, the fixing frame 3 further includes a third fastening member 34, the third fastening member 34 passes through the third through hole 191 to connect with the third threaded hole 311, and the head of the third fastening member 34 is clamped with the edge of the lower end of the third through hole 191. The connecting portion 31 is connected to the base 1 through the third fastening member 34, so that the fixing frame 3 and the base 1 can be conveniently detached from each other, and when one of the fixing frame 3 and the base 1 is damaged, the fixing frame can be conveniently maintained and replaced.

The third fastening member 34 may be a screw or a bolt, and is not limited in particular.

In some embodiments, in order to facilitate adjustment of the position of the projection screen 4 relative to the projector 5 in the first horizontal direction X, as shown in fig. 4 and 5, the third through hole 191 is a kidney-shaped hole, and the length direction of the third through hole 191 coincides with the first horizontal direction X (i.e., the thickness direction of the fixing portion 32). Therefore, the position of the fixing frame 3 relative to the projector 5 in the first horizontal direction X can be adjusted through the third through hole 191 in the shape of the waist-shaped hole, and further the position of the projection screen 4 relative to the projector 5 in the first horizontal direction X is adjusted, so that the projection picture of the projector 5 falls on the projection screen 4, and the quality of the projection picture is ensured.

In some embodiments, in order to improve the stability of the fixing frame 3, as shown in fig. 5, the base 1 has a first engaging surface 192, and the first engaging surface 192 is flat; the bottom end of the connecting portion 31 has a second mating surface 312, and the second mating surface 312 is flat and contacts with the first mating surface 192; the third through hole 191 is opened on the first mating surface 192, and the third threaded hole 311 is opened on the second mating surface 312. Because first fitting surface 192, second fitting surface 312 all are flat, after connecting portion 31 installed on base 1, be the face contact between connecting portion 31 and the base 1 so, can avoid mount 3 to take place the slope well to can improve the stability of mount 3, and then can guarantee the stability in position between projection screen 4 and the projector 5.

In some embodiments, in order to improve the firmness of the connection between the fixing frame 3 and the base 1, as shown in fig. 4 and 5, the number of the third through holes 191 is multiple, and the third through holes 191 are arranged in an array (for example, a 2 × 2 array), the number of the third threaded holes 311 is multiple, the number of the third fastening members 34 is multiple, and each third fastening member 34 passes through the corresponding third through hole 191 to connect with the corresponding third threaded hole 311. The fixing frame 3 is connected with the base 1 through a plurality of third fasteners 34, so that the connection strength between the fixing frame 3 and the base 1 is improved, and the stability of the fixing frame 3 is ensured.

In some embodiments, as shown in fig. 3, 4 and 13, the projector 5 includes a housing 51 disposed on the base 1, the housing 51 is provided with an avoiding space 59, the fixing frame 3 protrudes from the avoiding space 59, specifically, the avoiding space 59 includes a first avoiding port 591 disposed on the top wall 53 of the housing 51 and a second avoiding port 592 disposed on the bottom wall 56, the first avoiding port 591 is disposed opposite to the second avoiding port 592, and the fixing frame 3 is disposed through the first avoiding port 591 and the second avoiding port 592. By such an arrangement, the layout between the fixing frame 3 and the projector 5 can be more compact, and the occupation of the fixing frame 3 on the space of the base 1 outside the casing 51 can be reduced, thereby being beneficial to reducing the size of the base 1.

In some embodiments, to facilitate the fixed frame 3 to pass out of the housing 51 of the projector 5, as shown in fig. 3, 4 and 13, the fixed portion 32 is detachably connected to the connecting portion 31, for example, the fixed portion 32 and the connecting portion 31 can be detachably connected by a fourth fastening member 35. The connecting portion 31 can be first mounted on the base 1 on the mounting fixture 3, the connecting portion 31 extends into the lower half-shell 55 from the second avoiding opening 592, then the fixing portion 32 extends into the upper half-shell 52 from the first avoiding opening 591, then the fixing portion 32 is connected with the connecting portion 31, and the upper half-shell 52 is connected with the lower half-shell 55. Through the detachable connection of the fixing portion 32 and the connecting portion 31, the connecting portion 31 or the fixing portion 32 can conveniently pass through the avoiding space 59, and therefore the fixing frame 3 and the base 1 can be conveniently installed.

The fourth fastening member 35 may be a screw or a bolt, and is not limited in this respect.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A projection device, comprising:

a base;

the fixing frame is arranged on the base;

the projection screen is positioned above the base and is arranged on the fixed frame;

the projector is configured to project a projection light beam on the projection screen and comprises a casing, and an adjusting screw hole is formed in the bottom wall of the casing;

the adjusting piece is rotatably arranged on the base, extends in the vertical direction and is matched with the adjusting screw hole, so that the position of the projector relative to the base in the vertical direction can be adjusted.

2. The projection device of claim 1,

the adjusting pieces comprise two first adjusting pieces rotatably arranged at one end part of the base along a first horizontal direction and two second adjusting pieces rotatably arranged at the other end part of the base along the first horizontal direction; the first horizontal direction is consistent with the thickness direction of the projection screen;

the two first adjusting pieces extend along the vertical direction and are arranged at intervals along the second horizontal direction; the two second adjusting pieces extend along the vertical direction and are arranged at intervals along the second horizontal direction; the second horizontal direction is perpendicular to the first horizontal direction;

the adjusting screw holes comprise two first sub screw holes located at one end of the bottom wall in the first horizontal direction and two second sub screw holes located at the other end of the bottom wall in the first horizontal direction;

the two first adjusting pieces are matched with the two first sub screw holes in a one-to-one corresponding mode, and the two second adjusting pieces are matched with the two second sub screw holes in a one-to-one corresponding mode.

3. The projection device of claim 2,

the two first adjusting pieces are respectively positioned on two sides of a first plane, and the two second adjusting pieces are respectively positioned on two sides of the first plane;

the first plane is a central plane of the projector in the second horizontal direction.

4. Projection device according to claim 2 or 3,

the first adjusting piece comprises a first adjusting wheel, a first screw rod coaxially fixed on the upper side of the first adjusting wheel and a first connecting column coaxially fixed on the lower side of the first adjusting wheel, the first screw rod is matched with the first sub-screw hole, and the first connecting column is rotatably arranged on the base;

and/or the presence of a gas in the gas,

the second regulating part comprises a second regulating wheel, a second screw rod and a second connecting column, the second screw rod is coaxially fixed to the upper side of the second regulating wheel, the second connecting column is coaxially fixed to the lower side of the second regulating wheel, the second screw rod is matched with the second sub-screw hole, and the second connecting column is rotatably arranged on the base.

5. The projection device of claim 4, wherein an edge region of the first adjustment wheel extends beyond an edge of the base.

6. The projection device of claim 4,

the projection equipment further comprises a first limiting fastener, and a first limiting screw hole is formed in the upper end face of the first screw rod;

the first limiting fastener is matched with the first limiting screw hole, and in the horizontal direction, the size of the head of the first limiting fastener is larger than that of the first sub screw hole.

7. The projection device of claim 4,

a first boss is arranged on the base;

the first connecting through hole is formed in the first boss;

the first adjusting wheel is located on the top surface of the first boss, and the edge area of the first adjusting wheel is located outside the first boss.

8. The projection apparatus as claimed in claim 4, wherein the base has an adjustment opening extending through the base in a vertical direction, and the second adjustment wheel is located at an edge of the adjustment opening.

9. The projection device of claim 4,

the projection equipment further comprises a second limiting fastener, and a second limiting screw hole is formed in the upper end face of the second screw rod;

the second limiting fastener is matched with the second limiting screw hole, and in the horizontal direction, the head of the second limiting fastener is larger than the second sub-screw hole in size.

10. The projection device of claim 4,

a second boss is arranged on the base;

the second connecting through hole is formed in the second boss;

the second regulating wheel is positioned on the top surface of the second boss, and the edge area of the second regulating wheel is positioned outside the second boss.

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