CN211956103U - Projection screen, flatness adjusting device and supporting and limiting device - Google Patents
Projection screen, flatness adjusting device and supporting and limiting device Download PDFInfo
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- CN211956103U CN211956103U CN201922335129.9U CN201922335129U CN211956103U CN 211956103 U CN211956103 U CN 211956103U CN 201922335129 U CN201922335129 U CN 201922335129U CN 211956103 U CN211956103 U CN 211956103U
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- frame
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- fastening
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
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- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The utility model provides a projection screen, a flatness adjusting device and a supporting and limiting device, wherein the projection screen comprises a left frame, a right frame, a curtain and a flatness adjusting device, wherein the curtain is fixed between the left frame and the right frame; flatness adjusting device sets up respectively on left side frame and the right frame for adjust projection screen's roughness, flatness adjusting device includes first bearing structure and first adjustment structure, first bearing structure is used for connecting the support carrier, first adjustment structure is used for connecting left side frame or the right frame, first bearing structure passes through the screw thread screw in first adjustment structure is fixed for the projection screen face roughness is good, easily fold, small light in weight, transportation simple to operate.
Description
Technical Field
The utility model relates to a projection screen and be used for this projection screen's flatness adjusting device and support stop device belongs to display screen and makes technical field.
Background
Projection screens currently on the market generally include two types: soft and hard curtains. The soft curtain can be curled, lifted or tightened by the frame when in use, and has the advantages of convenient transportation and light weight; the defects are that the screen surface is not smooth enough, and is easy to wrinkle in the process of tightening or using, thereby influencing the definition of images on the screen and the watching effect. Another kind of hard curtain uses the backplate of high rigidity, adopts the fixed fresnel screen of packaging technology such as laminating, and the plane degree of screen can be guaranteed to this kind of mounting means to ensure the viewing effect of high quality projection display, but when the wall surface is not flat or when inclining, the good plane degree of screen can not be guaranteed to traditional backplate mounting means, in addition, because the backplate has adopted metal material such as honeycomb aluminium, whole weight is big, the screen also can not buckle, has caused great difficulty for installation and transportation.
Medium and large projection systems, such as mobile small commercial presentations, multimedia conference rooms, classrooms, stadiums, churches, commercial venues, large auditoriums, and super-large screen projection systems for virtual displays even large to cinemas, are familiar to more and more consumers as various projection devices are applied to various occasions, but the above disadvantages of the projection screens are a common bottleneck problem. Therefore, it is urgently needed to provide a projection display screen which is convenient to transport and install and has good flatness and reliability, and is convenient for consumers to use with various projection devices and display devices.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to prior art provides a projection screen, and product curtain face roughness is good, easily fold, small light in weight, transportation simple to operate.
The utility model discloses the technical problem that solve is realized through following technical scheme:
in a first aspect, the utility model provides a projection screen, which comprises a left frame, a right frame, a curtain and a flatness adjusting device, wherein the curtain is fixed between the left frame and the right frame; the flatness adjusting devices are respectively arranged on the left frame and the right frame and are used for adjusting the flatness of the projection screen; the flatness adjusting device comprises a first supporting structure and a first adjusting structure, the first supporting structure is used for connecting a supporting carrier, the first adjusting structure is used for connecting the left frame or the right frame, and the first supporting structure is screwed in through threads and fixed.
Further, still include: the upper frame and the lower frame are connected with the left frame and the right frame through a blank cap structure; the flatness adjusting device is arranged on the back of the left frame and the back of the right frame.
Further, the width of last frame, lower frame, left frame, right frame is the same and little further, left frame and right frame still include: card strip structure with hold the triangular groove of card strip structure, the first contact surface of card strip structure with the curtain is laminated mutually, first contact surface with the triangular groove presss from both sides tightly jointly the curtain.
Furthermore, the curtain edge is provided with a rectangular through groove, a first contact surface of the clamping strip structure is provided with a protruding structure which is completely consistent with the rectangular through groove in length, width and thickness, and the protruding structure is used for being connected with the rectangular through groove.
Further, frame back rivets are further arranged on the back faces of the left frame and the right frame.
Further, still include: the supporting and limiting device comprises a fixed block, an outer side fastening sliding block and an inner side fastening sliding block, wherein the outer side fastening sliding block and the inner side fastening sliding block are arranged in the fixed block, a fastening cavity used for accommodating the frame back rivet is arranged between the outer side fastening sliding block and the inner side fastening sliding block, the outer side fastening sliding block is provided with a first through fastening hole without threads, the inner side fastening sliding block is provided with a second through fastening hole with threads, the first through fastening hole and the second through fastening hole are used for assembling a clamping screw, and the outer side fastening sliding block, the inner side fastening sliding block, the clamping screw and the fastening cavity are used for clamping and fixing the frame back rivet; the supporting and limiting device is fixedly connected with the left frame or the right frame through the frame back rivet, the fixed block is fixedly connected with the supporting carrier, and the supporting and limiting device is used for fixing the projection screen on the supporting carrier.
Furthermore, a sliding groove is further formed in the fixed block, and the inner side fastening sliding block and the outer side fastening sliding block can move in the sliding groove; still be equipped with horizontal tension in the fixed block and keep the screw be equipped with on the lateral wall of fixed block and be used for the installation the mounting hole of horizontal tension screw, the mounting hole inner wall is equipped with the mounting thread, horizontal tension screw pass through mounting thread screw in the mounting hole and with inboard fastening block contacts and produces a thrust, horizontal tension keeps the screw to be used for promoting inboard fastening slider is in remove in the spout to further drive frame back rivet removes.
In a second aspect, the present invention provides a flatness adjusting device for connecting to the projection screen, wherein the flatness adjusting device is respectively disposed on the left frame and the right frame for adjusting the flatness of the projection screen; the flatness adjusting device comprises a first supporting structure and a first adjusting structure, the first supporting structure is used for being connected with the supporting carrier, the first adjusting structure is used for being connected with the left frame or the right frame, and the first supporting structure is screwed in through threads and fixed with the first adjusting structure.
The utility model provides a third aspect, the utility model provides a support stop device for connect the projection screen, support stop device includes the fixed block and locates outside fastening slider and inboard fastening slider in the fixed block, be equipped with the fastening chamber that is used for holding frame back rivet between outside fastening slider and the inboard fastening slider, outside fastening slider is equipped with unthreaded first through fastening hole, inboard fastening slider is equipped with threaded second through fastening hole, first through fastening hole and second through fastening hole are used for assembling the clamping screw, outside fastening slider, inboard fastening slider, clamping screw, fastening chamber are used for clamping the fixed frame back rivet; the supporting and limiting device is fixedly connected with the left frame or the right frame through the frame back rivet, the fixed block is fixedly connected with the supporting carrier, and the supporting and limiting device is used for fixing the projection screen on the supporting carrier.
Furthermore, a sliding groove is further formed in the fixed block, and the inner side fastening sliding block and the outer side fastening sliding block can move in the sliding groove; still be equipped with horizontal tension in the fixed block and keep the screw be equipped with on the lateral wall of fixed block and be used for the installation the mounting hole of horizontal tension screw, the mounting hole inner wall is equipped with the mounting thread, horizontal tension screw pass through mounting thread screw in the mounting hole and with inboard fastening block contacts and produces a thrust, horizontal tension keeps the screw to be used for promoting inboard fastening slider is in remove in the spout to further drive frame back rivet removes.
To sum up, the utility model provides a projection screen and be used for this projection screen's flatness adjusting device and support stop device, the product curtain face roughness is good, non-deformable corrugates, small light in weight, transportation simple to operate.
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is an assembly schematic view of a projection screen according to the present invention;
fig. 2 is a schematic view of the projection screen of the present invention when it is folded;
fig. 3a is a schematic structural view of the flatness adjusting device of the present invention;
fig. 3b is an assembly schematic diagram of the flatness adjusting device of the present invention;
FIG. 4 is a schematic view of the closure of the present invention;
fig. 5 is an assembly diagram of the projection screen of the present invention;
fig. 6 is a schematic structural diagram of a projection screen clip strip structure of the present invention;
fig. 7 is another assembly diagram of the projection screen of the present invention;
fig. 8 is a schematic structural view of the projection screen supporting and limiting device of the present invention.
Detailed Description
The utility model discloses a screen can be used to the projection display field, also can be used to other display fields that are used for showing the image. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and fig. 2, the present invention provides a projection screen, which includes a left frame 11, a right frame 12, a curtain 13, and a flatness adjusting device 20, wherein the curtain 13 is fixed between the left frame 11 and the right frame 12; the flatness adjusting device 20 is disposed on the left frame 11 and the right frame 12, and is used for adjusting the flatness of the projection screen. Curtain 13 is fixed through left frame 11 and right frame 12, and left frame 11 and right frame 12 are fixed on wall 10 through shown flatness adjusting device 20 respectively, and flatness adjusting device 20 possesses independent three-dimensional regulatory function, adjusts on first, second and third direction, and first direction is perpendicular screen direction, and the second direction is the horizontal direction, and the third direction is vertical direction, and is optional, left side frame 11 and right frame 12 are equipped with 2 flatness adjusting device 20 respectively.
As shown in fig. 3a and 3b, the flatness adjusting apparatus 20 includes a first supporting structure 201 and a first adjusting structure 202, wherein the first supporting structure 201 is connected to the first adjusting structure 202 through a screw thread; the first supporting structure 201 is used for connecting a supporting carrier, and the first adjusting structure 202 is used for connecting the left frame 11 and the right frame 12. First bearing structure 201 is fixed on wall 10, be connected with first adjustment structure 202 through the screw thread, the device can block into the slot position of left side frame 11 and right frame 12, meanwhile can adjust the thickness of flatness adjusting device 20 through the screw thread rotation, thereby adjust the interval between left side frame 11 or right frame 12 and the wall 10, thereby adjust the interval between curtain 13 and the wall 10, thereby adjust the roughness of curtain 13, the regulatory function who has first direction promptly. The second direction and the third direction can be adjusted by changing the up, down, left and right positions of the flatness adjusting apparatus 20 on the left frame 11 or the right frame 12. Alternatively, threads of different lengths may be selected for rotationally adjusting the thickness of the flatness adjustment mechanism 20. Optionally, the fixed adjusting device is hidden behind the left frame 11 or the right frame 12 of the screen, so that the beauty of the projection screen when the projection screen is viewed from the front is ensured. Through the design of the left frame 11 and the right frame 12 and the flatness adjusting device 20, the screen surface of the projection screen has good flatness, is not easy to deform and wrinkle, and is easy to fold, small in size, light in weight and convenient to transport and install.
As shown in fig. 4, the projection screen further includes: the upper frame 15 and the lower frame 16 are connected with the left frame 11 and the right frame 12 through cross bars 22 and blank caps 21; the flatness adjusting device 20 is arranged on the back of the left frame 11 and the right frame 12. Further, the widths of the upper frame 15, the lower frame 16, the left frame 11 and the right frame 12 are the same and are less than or equal to 15 mm. Because the installation precision and the expansion and contraction effect need to be considered, the four corners of the screen are installed in an interference fit mode by adopting the blank caps 21. Therefore, the whole structure of the projection screen is more stable, the cleaning and the maintenance are easier, and the appearance is more beautiful. Optionally, the upper frame 15 and the lower frame 16 are decoration frames, which do not provide surface tension for the curtain 13, but if the curtain 13 is uneven, the upper frame 15 and the lower frame 16 can correct the unevenness of the curtain 13 in a third direction through self-fastening structures.
As shown in fig. 5, the left frame 11 and the right frame 12 further include: card strip 30 structure with hold the triangular groove of card strip 30 structure, the first contact surface of card strip 30 structure with curtain 13 laminates mutually, first contact surface with the triangular groove presss from both sides tightly jointly curtain 13. Optionally, the first contact surface of card strip 30 passes through modes such as gluing and laminates at curtain 13 edge, and card strip 30 moves along the slope, applys vertical pressure to curtain 13, compresses tightly curtain 13 edge and frame inboard, guarantees that the screen is difficult for misplacing for a long time.
As shown in fig. 6, the edge of the curtain 13 is provided with a rectangular through groove 131, the first contact surface of the structure of the clip strip 30 is provided with a protrusion structure 301 which is completely consistent with the length, width and thickness of the rectangular through groove 131, the protrusion structure 301 is used for connecting with the rectangular through groove 131, the clip strip 30 is connected with the curtain 13 in a snap-fit manner and is refilled into the left frame 11 or the right frame 12 for fixing, so that the curtain 13 and the clip strip 30 can be more tightly combined, the amount of adhesive can be reduced, and the assembly and disassembly can be easier.
As shown in fig. 5, 7 and 8, frame back rivets 31 are further disposed on the back surfaces of the left frame 11 and the right frame 12. The frame back rivets 31 are fixed on the backs of the left frame 11 and the right frame 12 and are used for being connected with the supporting and limiting device 40, and the positions of the frame back rivets 31 determine the positions of the frames. Optionally, the bezel width on the back of the screen is larger (preferably greater than 20mm), providing a stronger bending strength.
Preferably, the method further comprises the following steps: and the supporting and limiting device 40 is arranged on a supporting carrier such as a wall surface 10, and is connected with the frame of the projection screen through a frame back rivet 31. The supporting and limiting device 40 comprises a fixed block 401, an outer side fastening slide block 4011 and an inner side fastening slide block 4012 which are arranged in the fixed block 401, a fastening cavity for accommodating the frame back rivet 31 is arranged between the outer side fastening slide block 4011 and the inner side fastening slide block, the outer side fastening slide block 4011 is provided with a first through fastening hole 402 without threads, the inner side fastening slide block 4012 is provided with a second through fastening hole with threads, the first through fastening hole 402 and the second through fastening hole are used for assembling clamping screws, and the outer side fastening slide block 4011, the inner side fastening slide block 4012, the clamping screws and the fastening cavity are used for clamping and fixing the frame back rivet 31; the supporting and limiting device 40 is fixedly connected with the left frame 11 or the right frame 12 through the frame back rivet 31, the fixing block 401 is fixedly connected with the supporting carrier such as a wall surface 10, and the supporting and limiting device 40 is used for fixing the projection screen on the supporting carrier such as the wall surface 10.
A clamping screw is inserted into the first through-fastening hole 402 of the outer fastening slider 4011 and is tightened into the second through-fastening hole of the inner fastening slider 4012. The oval hole of the fastening cavity through which the frame back rivet 31 passes is smaller than the diameter of the frame back rivet 31 when completely closed, so that the frame back rivet 31 can be tightened, which can fix the projection screen more firmly.
A sliding groove is further formed in the fixed block 401, and the inner fastening sliding block 4012 and the outer fastening sliding block 4011 can move in the sliding groove; a transverse tension holding screw 403 is further disposed in the fixing block 401, and is used for limiting the position of the inner fastening sliding block 4012, and adjusting and controlling the transverse (second direction) tension of the screen 13 of the projection screen when the screen is tightened. Be equipped with on the lateral wall of fixed block 401 and be used for the installation the mounting hole of horizontal tension screw 403, the mounting hole inner wall is equipped with mounting thread, horizontal tension screw 403 passes through mounting thread screw in the mounting hole and with inboard fastening block 4012 contacts and produces a thrust, horizontal tension keeps screw 403 to be used for promoting inboard fastening slider 4012 is in remove in the spout, thereby to frame back rivet 31 applys thrust, thereby frame 11 and the right frame 12 thrust left to exert tension to curtain 13.
Optionally, the long sides of the oval holes of the fastening cavity are parallel to the left frame 11 and the right frame 12 for accommodating installation errors.
In conclusion, the flatness adjusting device 20 and the supporting and limiting device 40 make the screen surface of the projection screen have good flatness, less deformation and wrinkling, small volume, light weight and convenient transportation and installation.
In a second aspect, as shown in fig. 3a and 3b, the present invention provides a flatness adjusting device 20, respectively disposed on the left frame 11 and the right frame 12, for connecting the projection screen, wherein the flatness adjusting device 20 includes a first supporting structure 201 and a first adjusting structure 202, the first supporting structure 201 is connected to the first adjusting structure 202 through a screw thread; the first supporting structure 201 is used for connecting a supporting carrier, and the first adjusting structure 202 is used for connecting the left frame 11 and the right frame 12. First bearing structure 201 is fixed on wall 10, is connected with first adjustment structure 202 through the screw thread, and the device can block into the slot position of left side frame 11 and right frame 12, and meanwhile can adjust the thickness of flatness adjusting device 20 through the screw thread rotation to adjust the interval between left side frame 11 or right frame 12 and the wall 10, thereby adjust the interval between curtain 13 and the wall 10, thereby adjust the roughness of curtain 13. Alternatively, threads of different lengths may be selected for rotationally adjusting the thickness of the flatness adjustment mechanism 20. Optionally, the fixed adjusting device is hidden behind the left frame 11 or the right frame 12 of the screen, so that the overall size of the projection screen is reduced, the installation space is saved, and the attractiveness of the projection screen during front viewing can be improved.
In a third aspect, as shown in FIG. 8, the present invention provides a support and position-limiting device 40 for connecting to the projection screen, the support and position-limiting device 40 is mounted on a support carrier such as a wall 10, and is connected to the frame of the projection screen by a frame back rivet 31. The supporting and limiting device 40 comprises a fixed block 401, an outer side fastening slide block 4011 and an inner side fastening slide block 4012 which are arranged in the fixed block 401, a fastening cavity for accommodating the frame back rivet 31 is arranged between the outer side fastening slide block 4011 and the inner side fastening slide block, the outer side fastening slide block 4011 is provided with a first through fastening hole 402 without threads, the inner side fastening slide block 4012 is provided with a second through fastening hole with threads, the first through fastening hole 402 and the second through fastening hole are used for assembling clamping screws, and the outer side fastening slide block 4011, the inner side fastening slide block 4012, the clamping screws and the fastening cavity are used for clamping and fixing the frame back rivet 31; the supporting and limiting device 40 is fixedly connected with the left frame 11 or the right frame 12 through the frame back rivet 31, the fixing block 401 is fixedly connected with the supporting carrier such as a wall surface 10, and the supporting and limiting device 40 is used for fixing the projection screen on the supporting carrier such as the wall surface 10.
A clamping screw is inserted into the first through-fastening hole 402 of the outer fastening slider 4011 and is tightened into the second through-fastening hole of the inner fastening slider 4012. The oval hole of the fastening cavity through which the frame back rivet 31 passes is smaller than the diameter of the frame back rivet 31 when completely closed, so that the frame back rivet 31 can be tightened, which can fix the projection screen more firmly.
Optionally, a sliding groove is further formed in the fixed block 401, and the inner fastening sliding block 4012 and the outer fastening sliding block 4011 can move in the sliding groove; a transverse tension holding screw 403 is further disposed in the fixing block 401, and is used for limiting the position of the inner fastening sliding block 4012, and adjusting and controlling the transverse (second direction) tension of the screen 13 of the projection screen when the screen is tightened. Be equipped with on the lateral wall of fixed block 401 and be used for the installation the mounting hole of horizontal tension screw 403, the mounting hole inner wall is equipped with mounting thread, horizontal tension screw 403 passes through mounting thread screw in the mounting hole and with inboard fastening block 4012 contacts and produces a thrust, horizontal tension keeps screw 403 to be used for promoting inboard fastening slider 4012 is in remove in the spout, thereby to frame back rivet 31 applys thrust, thereby frame 11 and the right frame 12 thrust left to exert tension to curtain 13, make curtain 13 level and more smooth.
Optionally, the long sides of the oval holes of the fastening cavity are parallel to the left frame 11 and the right frame 12 for accommodating installation errors.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. A projection screen, characterized by: the curtain comprises a left frame, a right frame, a curtain and a flatness adjusting device, wherein the curtain is fixed between the left frame and the right frame; the flatness adjusting devices are respectively arranged on the left frame and the right frame and are used for adjusting the flatness of the projection screen; the flatness adjusting device comprises a first supporting structure and a first adjusting structure, the first supporting structure is used for connecting a supporting carrier, the first adjusting structure is used for connecting the left frame or the right frame, and the first supporting structure is screwed in through threads and fixed.
2. The projection screen of claim 1, further comprising: the upper frame and the lower frame are connected with the left frame and the right frame through a blank cap structure; the flatness adjusting device is arranged on the back of the left frame and the back of the right frame.
3. The projection screen of claim 2 wherein the widths of the top, bottom, left, and right borders are the same and less than or equal to 15 mm.
4. The projection screen of claim 1, wherein the left and right borders further comprise: card strip structure with hold the triangular groove of card strip structure, the first contact surface of card strip structure with the curtain is laminated mutually, first contact surface with the triangular groove presss from both sides tightly jointly the curtain.
5. The projection screen of claim 4, wherein the edge of the curtain is provided with a rectangular through groove, the first contact surface of the clamping strip structure is provided with a protruding structure which is completely consistent with the rectangular through groove in length, width and thickness, and the protruding structure is used for being connected with the rectangular through groove.
6. The projection screen of claim 1 wherein frame back rivets are also provided on the back of the left and right frames.
7. The projection screen of claim 6, further comprising: the supporting and limiting device comprises a fixed block, an outer side fastening sliding block and an inner side fastening sliding block, wherein the outer side fastening sliding block and the inner side fastening sliding block are arranged in the fixed block, a fastening cavity used for accommodating the frame back rivet is arranged between the outer side fastening sliding block and the inner side fastening sliding block, the outer side fastening sliding block is provided with a first through fastening hole without threads, the inner side fastening sliding block is provided with a second through fastening hole with threads, the first through fastening hole and the second through fastening hole are used for assembling a clamping screw, and the outer side fastening sliding block, the inner side fastening sliding block, the clamping screw and the fastening cavity are used for clamping and fixing the frame back rivet; the supporting and limiting device is fixedly connected with the left frame or the right frame through the frame back rivet, the fixed block is fixedly connected with the supporting carrier, and the supporting and limiting device is used for fixing the projection screen on the supporting carrier.
8. The projection screen of claim 7 wherein a slide slot is further provided in the fixed block, the inner and outer tightening sliders moving within the slide slot; still be equipped with horizontal tension in the fixed block and keep the screw be equipped with on the lateral wall of fixed block and be used for the installation the mounting hole of horizontal tension screw, the mounting hole inner wall is equipped with the mounting thread, horizontal tension screw pass through mounting thread screw in the mounting hole and with inboard fastening block contacts and produces a thrust, horizontal tension keeps the screw to be used for promoting inboard fastening slider is in remove in the spout to further drive frame back rivet removes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335129.9U CN211956103U (en) | 2019-12-24 | 2019-12-24 | Projection screen, flatness adjusting device and supporting and limiting device |
| PCT/CN2020/137084 WO2021129500A1 (en) | 2019-12-24 | 2020-12-17 | Projection screen, flatness adjusting devices, and supporting and limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335129.9U CN211956103U (en) | 2019-12-24 | 2019-12-24 | Projection screen, flatness adjusting device and supporting and limiting device |
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| Publication Number | Publication Date |
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| CN211956103U true CN211956103U (en) | 2020-11-17 |
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| CN201922335129.9U Active CN211956103U (en) | 2019-12-24 | 2019-12-24 | Projection screen, flatness adjusting device and supporting and limiting device |
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| Country | Link |
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| CN (1) | CN211956103U (en) |
| WO (1) | WO2021129500A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129500A1 (en) * | 2019-12-24 | 2021-07-01 | 深圳光峰科技股份有限公司 | Projection screen, flatness adjusting devices, and supporting and limiting device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201886271U (en) * | 2010-10-29 | 2011-06-29 | 广东威创视讯科技股份有限公司 | Ultrathin rear projection cube screen adjusting device |
| CN203595889U (en) * | 2013-12-06 | 2014-05-14 | 深圳市真屏科技发展有限公司 | Installation device preventing projection screen against deformation caused by heat-expansion and cold-contraction |
| CN206573848U (en) * | 2017-03-15 | 2017-10-20 | 江苏海事职业技术学院 | Projection screen component and the optical projection system with it |
| CN109752910B (en) * | 2017-11-03 | 2021-06-08 | 深圳光峰科技股份有限公司 | Fixing device, projection screen and projection equipment |
| CN110501869A (en) * | 2018-05-18 | 2019-11-26 | 深圳光峰科技股份有限公司 | Projection screen and optical projection system including projection screen |
| CN211956103U (en) * | 2019-12-24 | 2020-11-17 | 深圳光峰科技股份有限公司 | Projection screen, flatness adjusting device and supporting and limiting device |
-
2019
- 2019-12-24 CN CN201922335129.9U patent/CN211956103U/en active Active
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2020
- 2020-12-17 WO PCT/CN2020/137084 patent/WO2021129500A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129500A1 (en) * | 2019-12-24 | 2021-07-01 | 深圳光峰科技股份有限公司 | Projection screen, flatness adjusting devices, and supporting and limiting device |
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| WO2021129500A1 (en) | 2021-07-01 |
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