CN204241825U - Luffing framework projection screen in length and breadth - Google Patents
Luffing framework projection screen in length and breadth Download PDFInfo
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- CN204241825U CN204241825U CN201420760309.6U CN201420760309U CN204241825U CN 204241825 U CN204241825 U CN 204241825U CN 201420760309 U CN201420760309 U CN 201420760309U CN 204241825 U CN204241825 U CN 204241825U
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Abstract
The utility model one is luffing framework projection screen in length and breadth, it comprises the first spool and the second spool, be characterized in: also comprise framework, bearing and curtain, described framework by two the first flexible frames as left and right side frame, the second flexible frame as upper side frame and as lower frame the 3rd flexible frame successively alternately symmetry be connected and form; At the back side of framework, the two ends of two pieces first flexible frames and the second flexible frame are connected bearing respectively, first spool to be placed between bearing that the first flexible frame two ends arrange and to be connected, and the second spool to be placed between bearing that the second flexible frame two ends arrange and to be connected; Described curtain is for being inverted T-shaped, being inverted the curtain of T-shaped is placed between framework and the first spool or the second spool, the both sides of curtain bottom are connected with the first spool respectively, top and the second spool are connected, magnetic stripe be placed in curtain and the first spool or the second spool be connected beyond edge, be connected between framework and curtain.
Description
Technical field
The utility model relates to projection screen, is one luffing framework projection screen in length and breadth.
Background technology
Projection screen is used in the instrument of projection image film, office, home theater and convention occasion being used for show image, video file.The projection image of prior art is according to length and width score 1.78:1(16:9), 2.35:1(21:9) etc. different breadth, the user of most viewing projection image only uses a kind of projection screen of breadth usually, when watching the projection image different from projection screen breadth used, need to make the equidirectional measure-alike of projection image direction size and projection screen used, black surround or image cutting is there will be beyond the image boundary in another direction of projection screen, although the projection image different from projection screen breadth used can be watched, but the black surround on projection screen or image cutting can disturb viewing projection image.Also have and adopt cropping panel slip shield portions curtain, realize the change of non-shield portions curtain Aspect Ratio, corresponding different Aspect Ratio projection image, eliminate black surround or image cutting that general fixed frame curtain shows, but shield portions is still present within the framework of projection screen, even if the tolerance of (full shadow tone chamber because of projector luminescence also belong to low light environment) human eye still can accurate recognition image boundary and framework border under low light environment, also can the existence of cropping panel in framework of identification border, affect viewing effect.And also there is a common shortcoming in said method, namely when watching the projection image different from projection screen breadth used, black surround or image cutting is there will be beyond image boundary, the projected area of its projection image is less than projection screen area used, namely the imagery coverage after cropping is less than the imagery coverage before cropping, is equivalent to watch small breadth projection image.
Utility model content
Technical problem to be solved in the utility model is: the shortcoming overcoming prior art, one luffing framework projection screen is in length and breadth provided, namely curtain folding and unfolding is driven by telescopic slide frame, adjust the projection screen size of both direction respectively, change projection screen Aspect Ratio, projection screen framework and image boundary are accurately agreed with, for the image watching multiple different the ratio of width to height provides a perfect imaging region, realize black surround or the image cutting of thoroughly eliminating image appearance, the projected area of projection image can be kept again, obtain best and maximum viewing effect.
The scheme of the utility model technical solution problem is: one is luffing framework projection screen in length and breadth, it comprises the first spool and the second spool, it is characterized in that: also comprise framework, bearing and curtain, described framework by two the first flexible frames as left and right side frame, the second flexible frame as upper side frame and as lower frame the 3rd flexible frame successively alternately symmetry be connected and form; At the back side of framework, the two ends of two pieces first flexible frames and the second flexible frame are connected bearing respectively, first spool to be placed between bearing that the first flexible frame two ends arrange and to be connected, and the second spool to be placed between bearing that the second flexible frame two ends arrange and to be connected; Described curtain is for being inverted T-shaped, being inverted the curtain of T-shaped is placed between framework and the first spool or the second spool, the both sides of curtain bottom are connected with the first spool be connected on the first flexible frame respectively, top be connected in the second the second spool stretched on frame and be connected, a pair magnetic stripe be placed in curtain and the first spool or the second spool be connected beyond edge, be connected between framework and curtain.
The structure of the described first flexible frame is: it comprises the first fixed frame, first telescopic frame and luffing pull bar, described first fixed frame is the inside grooved of opening, two ends are connected bearing respectively, first telescopic frame is rectangular tube, first telescopic frame is placed in one end of the first fixed frame, termination to be stretched in the first fixed frame and is slidably connected, the other end of the first telescopic frame is connected with the second flexible frame termination as upper side frame, the other end of the first fixed frame is connected with the 3rd flexible frame termination as lower frame, luffing pull bar is built in the first fixed frame, one end and first fixed frame of luffing pull bar are connected, the other end and the first telescopic frame are connected, first fixed frame of the first flexible frame is downwards respectively as left and right side frame.
Also arrange anticreep slide block in described first fixed frame, the first telescopic frame also arranges the anticreep chute corresponding with the first fixed frame slide block outward, and anticreep slide block and anticreep chute are slidably connected.
The structure of the described second flexible frame is: it comprises the second fixed frame, the second telescopic frame, the 3rd telescopic frame and luffing pull bar, described second fixed frame is the inside grooved of opening, two ends are connected bearing respectively, second telescopic frame is rectangular tube, second telescopic frame is placed in one end of the second fixed frame, termination is stretched in the second fixed frame and be slidably connected, and the other end of the second telescopic frame is connected with the first telescopic frame termination of one first frame that stretches; 3rd telescopic frame is rectangular tube, 3rd telescopic frame is placed in the other end of the second fixed frame, termination is stretched in the second fixed frame and be slidably connected, stretch the first telescopic frame termination of frame of the other end of the 3rd telescopic frame and another root first is connected, two luffing pull bars are built in two ends in the second fixed frame respectively, one end and second fixed frame of each luffing pull bar are connected, the other end and the second telescopic frame or the 3rd telescopic frame are connected, and a pair magnetic stripe to be placed in respectively on the second telescopic frame or the 3rd telescopic frame with curtain correspondence position and to be connected.
The structure of the described 3rd flexible frame is substantially identical with the second flexible frame with annexation, difference is: the second fixed frame two ends need not be connected bearing, and the first fixed frame termination of flexible frame is connected the other end of the second telescopic frame or the 3rd telescopic frame with two first respectively.
Also arrange anticreep slide block in described second fixed frame, the second telescopic frame or the 3rd telescopic frame also arrange the anticreep chute corresponding with the second fixed frame slide block outward, and anticreep slide block and anticreep chute are slidably connected.
Described magnetic stripe is the magnetic patch that several are arranged successively.
The use procedure of the utility model luffing framework projection screen is in length and breadth: when watching the projection image different from projection screen breadth used, the luffing pull bar that the flexible frame of first startup second and the 3rd flexible frame are connected, when luffing pull bar drives the second flexible frame and the 3rd flexible frame shift-reduce breadth, also the first spool driving the first flexible frame to be connected furls curtain simultaneously, until projection screen breadth is reduced to framework to luffing pull bar and image right boundary accurately agrees with, first spool stops retracting curtain, then the luffing pull bar that the first flexible frame is connected is started, when luffing pull bar drives the first flexible frame to move increase breadth, also drive the second spool to discharge curtain simultaneously, until projection screen breadth is increased to framework to luffing pull bar and image coboundary is accurately agreed with, second spool stops retracting curtain, during the projection image that viewing is identical with projection screen breadth used again, start the luffing pull bar that the first flexible frame is connected, luffing pull bar drives the first flexible frame shift-reduce breadth, also drive the second spool to furl curtain simultaneously, until breadth is reduced to projection screen framework to luffing pull bar and image coboundary is accurately agreed with, second spool stops release curtain, then the luffing pull bar that the second flexible frame and the 3rd flexible frame are connected is started, when luffing pull bar drives the second flexible frame and the 3rd flexible frame moves increase breadth, also drive the first spool to discharge curtain simultaneously, until projection screen breadth is increased to framework to luffing pull bar and image right boundary accurately agrees with.
The beneficial effect of the utility model luffing framework projection screen is in length and breadth: change length by the first time moving telescopic of flexible frame, drive spool to roll up to curtain the synchronization action put and carry out a luffing, height is changed again by the second time moving telescopic of flexible frame, spool is driven curtain to be rolled up to the synchronization action put, can while projection screen used meets different breadth projection image, keep the projected area of projection image, the framework of projection screen used and image boundary are accurately agreed with, namely the attractive in appearance of projection screen used viewing projection image is met, avoid again the black surround on projection screen or image cutting edge can disturb viewing projection image, obtain best and maximum viewing effect, make spectators all can see image of the same area at the video image of identical sighting distance position viewing different proportion.There is the advantage that structure is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the utility model luffing framework projection screen in length and breadth;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 4 be the utility model in length and breadth luffing framework projection screen once adjust the schematic front view after breadth;
Fig. 5 be the utility model in length and breadth luffing framework projection screen secondary adjustment breadth after schematic front view;
Fig. 6 is that schematic diagram is looked on a left side of Fig. 5.
In figure: 1 second telescopic frame, 2 first telescopic frames, 3 luffing pull bars, 4 first fixed frames, 5 curtains, 6 second fixed frames, 7 second flexible frames, 8 the 3rd telescopic frames, 9 first flexible frames, 10 the 3rd flexible frames, 11 first spools, 12 bearings, 13 magnetic stripes, 14 second spools.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1 ~ Fig. 6, the present embodiment one is luffing framework projection screen in length and breadth, it comprises the first spool 11, second spool 14, framework, bearing 12 and curtain 5, described framework by two the first flexible frames 9 as left and right side frame, the second flexible frame 7 as upper side frame and as lower frame the 3rd flexible frame 10 successively alternately symmetry be connected and form; At the back side of framework, the two ends of two pieces first flexible frames 9 and the second flexible frame 7 are connected bearing 12 respectively, first spool 11 to be placed between bearing 12 that the first flexible frame 9 two ends arrange and to be connected, and the second spool 14 to be placed between bearing 12 that the second flexible frame 7 two ends arrange and to be connected; Described curtain 5 is for being inverted T-shaped, being inverted the curtain 5 of T-shaped is placed between framework and the first spool 11 or the second spool 14, the both sides of curtain 5 bottom are connected with the first spool 11 be connected on the first flexible frame 9 respectively, top be connected in the second the second spool 14 stretched on frame 7 and be connected, a pair magnetic stripe 13 be placed in curtain 5 and the first spool 11 or the second spool 14 be connected beyond edge, framework and curtain 5 between and be connected.The structure of the described first flexible frame 9 is: it comprises the first fixed frame 4, first telescopic frame 2 and luffing pull bar 3, the grooved that described first fixed frame 4 is inside in opening, two ends are connected bearing 12 respectively, first telescopic frame 2 is rectangular tube, first telescopic frame 2 is placed in one end of the first fixed frame 4, termination to be stretched in the first fixed frame 4 and is slidably connected, the other end of the first telescopic frame 2 is connected with the second telescopic frame 1 termination of the second flexible frame 7 as upper side frame, the other end of the first fixed frame 4 is connected with the second telescopic frame 1 termination of the 3rd flexible frame 10 as lower frame, luffing pull bar 3 is built in the first fixed frame 4, one end and first fixed frame 4 of luffing pull bar 3 are connected, the other end and the first telescopic frame 2 are connected, first fixed frame 4 of the first flexible frame 9 is downwards respectively as left and right side frame.Also arrange anticreep slide block in described first fixed frame 4, the first telescopic frame 2 is outer also arranges the anticreep chute corresponding with the first fixed frame 4 slide block, and anticreep slide block and anticreep chute are slidably connected.The structure of the described second flexible frame 7 is: it comprises the second fixed frame 6, second telescopic frame 1, the 3rd telescopic frame 8 and luffing pull bar 3, described second fixed frame 6 is the inside grooved of opening, two ends are connected bearing 12 respectively, second telescopic frame 1 is rectangular tube, second telescopic frame 1 is placed in one end of the second fixed frame 6, termination is stretched in the second fixed frame 6 and be slidably connected, and the other end of the second telescopic frame 1 is connected with the first telescopic frame 2 termination of one first frame 9 that stretches; 3rd telescopic frame 8 is rectangular tube, 3rd telescopic frame 8 is placed in the other end of the second fixed frame 6, termination is stretched in the second fixed frame 6 and be slidably connected, stretch the first telescopic frame 2 termination of frame 9 of the other end of the 3rd telescopic frame 8 and another root first is connected, two luffing pull bars 3 are built in two ends in the second fixed frame 6 respectively, one end and second fixed frame 6 of each luffing pull bar 3 are connected, the other end and the second telescopic frame 1 or the 3rd telescopic frame 8 are connected, and a pair magnetic stripe 13 to be placed in respectively on the second telescopic frame 1 or the 3rd telescopic frame 8 with curtain 5 correspondence position and to be connected.Structure, the annexation of the described 3rd flexible frame 10 are substantially identical with the second flexible frame 7, difference is: the second fixed frame 6 two ends need not be connected bearing 12, and the first fixed frame 4 termination of flexible frame 9 is connected the other end of the second telescopic frame 1 or the 3rd telescopic frame 8 with two first respectively.Also arrange anticreep slide block in described second fixed frame 6, the second telescopic frame 1 or the outer anticreep chute that also setting is corresponding with the second fixed frame 6 slide block of the 3rd telescopic frame 8, anticreep slide block and anticreep chute are slidably connected.Described magnetic stripe 13 is the magnetic patch that several are arranged successively.The present embodiment adopts prior art manufacture, and described first spool 11, second spool 14 and luffing pull bar 3 are the commercially available prod of prior art.
The use procedure of the present embodiment is: when watching the projection image different from projection screen breadth used, the luffing pull bar 3 that the flexible frame 7 of first startup second and the 3rd flexible frame 10 are connected, when luffing pull bar 3 drives the second flexible frame 7 and the 3rd flexible frame 10 shift-reduce breadth, also drive the first spool 11 to furl curtain 5 simultaneously, until projection screen breadth is reduced to framework to luffing pull bar 3 and image right boundary accurately agrees with, first spool 11 stops retracting curtain 5, then the luffing pull bar 3 that the first flexible frame 9 is connected is started, when luffing pull bar 3 drives the first flexible frame 9 to move increase breadth, also drive the second spool 14 to discharge curtain 5 simultaneously, until projection screen breadth is increased to framework to luffing pull bar 3 and image coboundary is accurately agreed with, second spool 14 stops retracting curtain 5, during the projection image that viewing is identical with projection screen breadth used again, start the luffing pull bar 3 that the first flexible frame 9 is connected, luffing pull bar 3 drives the first flexible frame 9 shift-reduce breadth, also drive the second spool 14 to furl curtain 5 simultaneously, until breadth is reduced to projection screen framework to luffing pull bar 3 and image coboundary is accurately agreed with, second spool 14 stops release curtain 5, then the luffing pull bar 3 that the second flexible frame 7 and the 3rd flexible frame 10 are connected is started, when luffing pull bar 3 drives the second flexible frame 7 and the 3rd flexible frame 10 moves increase breadth, also drive the first spool 11 to discharge curtain 5 simultaneously, until projection screen breadth is increased to framework to luffing pull bar 3 and image right boundary accurately agrees with.
Claims (6)
1. a luffing framework projection screen in length and breadth, it comprises the first spool and the second spool, it is characterized in that: also comprise framework, bearing and curtain, described framework by two the first flexible frames as left and right side frame, the second flexible frame as upper side frame and as lower frame the 3rd flexible frame successively alternately symmetry be connected and form; At the back side of framework, the two ends of two pieces first flexible frames and the second flexible frame are connected bearing respectively, first spool to be placed between bearing that the first flexible frame two ends arrange and to be connected, and the second spool to be placed between bearing that the second flexible frame two ends arrange and to be connected; Described curtain is for being inverted T-shaped, being inverted the curtain of T-shaped is placed between framework and the first spool or the second spool, the both sides of curtain bottom are connected with the first spool be connected on the first flexible frame respectively, top be connected in the second the second spool stretched on frame and be connected, a pair magnetic stripe be placed in curtain and the first spool or the second spool be connected beyond edge, be connected between framework and curtain.
2. luffing framework projection screen in length and breadth as claimed in claim 1, it is characterized in that: the described first flexible frame comprises the first fixed frame, first telescopic frame and luffing pull bar, described first fixed frame is the inside grooved of opening, two ends are connected bearing respectively, first telescopic frame is rectangular tube, first telescopic frame is placed in one end of the first fixed frame, termination to be stretched in the first fixed frame and is slidably connected, the other end of the first telescopic frame is connected with the second flexible frame termination as upper side frame, the other end of the first fixed frame is connected with the 3rd flexible frame termination as lower frame, luffing pull bar is built in the first fixed frame, one end and first fixed frame of luffing pull bar are connected, the other end and the first telescopic frame are connected, first fixed frame of the first flexible frame is downwards respectively as left and right side frame.
3. luffing framework projection screen in length and breadth as claimed in claim 1, it is characterized in that: the structure of the described second flexible frame is: it comprises the second fixed frame, the second telescopic frame, the 3rd telescopic frame and luffing pull bar, described second fixed frame is the inside grooved of opening, two ends are connected bearing respectively, second telescopic frame is rectangular tube, second telescopic frame is placed in one end of the second fixed frame, termination is stretched in the second fixed frame and be slidably connected, and the other end of the second telescopic frame is connected with the first telescopic frame termination of one first frame that stretches; 3rd telescopic frame is rectangular tube, 3rd telescopic frame is placed in the other end of the second fixed frame, termination is stretched in the second fixed frame and be slidably connected, stretch the first telescopic frame termination of frame of the other end of the 3rd telescopic frame and another root first is connected, two luffing pull bars are built in two ends in the second fixed frame respectively, one end and second fixed frame of each luffing pull bar are connected, the other end and the second telescopic frame or the 3rd telescopic frame are connected, and a pair magnetic stripe to be placed in respectively on the second telescopic frame or the 3rd telescopic frame with curtain correspondence position and to be connected.
4. luffing framework projection screen in length and breadth as claimed in claim 1, it is characterized in that: the structure of the described 3rd flexible frame is substantially identical with the second flexible frame with annexation, difference is: the second fixed frame two ends need not be connected bearing, and the first fixed frame termination of flexible frame is connected the other end of the second telescopic frame or the 3rd telescopic frame with two first respectively.
5. the framework of the luffing in length and breadth projection screen as described in as arbitrary in Claims 1 to 4, it is characterized in that: in described first fixed frame or the second fixed frame, anticreep slide block is also set, first telescopic frame or the second telescopic frame or the 3rd telescopic frame also arrange the anticreep chute corresponding with the second fixed frame slide block outward, and anticreep slide block and anticreep chute are slidably connected.
6. luffing framework projection screen in length and breadth as claimed in claim 1, is characterized in that: described magnetic stripe is the magnetic patch that several are arranged successively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760309.6U CN204241825U (en) | 2014-12-08 | 2014-12-08 | Luffing framework projection screen in length and breadth |
| PCT/CN2015/096332 WO2016091118A1 (en) | 2014-12-08 | 2015-12-03 | Variable-amplitude frame projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760309.6U CN204241825U (en) | 2014-12-08 | 2014-12-08 | Luffing framework projection screen in length and breadth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241825U true CN204241825U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420760309.6U Expired - Fee Related CN204241825U (en) | 2014-12-08 | 2014-12-08 | Luffing framework projection screen in length and breadth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241825U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360576A (en) * | 2014-12-08 | 2015-02-18 | 窦志刚 | Vertically and horizontally variable amplitude frame projection screen |
| WO2016091118A1 (en) * | 2014-12-08 | 2016-06-16 | 窦志刚 | Variable-amplitude frame projection screen |
| CN110946418A (en) * | 2019-12-17 | 2020-04-03 | 成都极米科技股份有限公司 | Laser television cabinet and projection equipment |
-
2014
- 2014-12-08 CN CN201420760309.6U patent/CN204241825U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360576A (en) * | 2014-12-08 | 2015-02-18 | 窦志刚 | Vertically and horizontally variable amplitude frame projection screen |
| WO2016091118A1 (en) * | 2014-12-08 | 2016-06-16 | 窦志刚 | Variable-amplitude frame projection screen |
| CN110946418A (en) * | 2019-12-17 | 2020-04-03 | 成都极米科技股份有限公司 | Laser television cabinet and projection equipment |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20171208 |