CN210534525U

CN210534525U - Projection screen

Info

Publication number: CN210534525U
Application number: CN201921499880.6U
Authority: CN
Inventors: 蔡廷柯; 陈波
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-05-15
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a projection screen, including telescopic expansion bracket and a plurality of projection screen module, each the projection screen module all includes the projection screen body and link, the projection screen body rotates the setting and is in on the link, the link is connected with the expansion bracket in order to stretch out or shrink at the expansion bracket with its synchronous motion, is provided with on the projection screen body to rotate at its relative link and opens the back with the connection structure rather than the adjacent projection screen body, when the expansion bracket is opened, a plurality of projection screen bodies connect gradually and coplane. Through the utility model provides a current projection screen size can't fold occupation space greatly and pack, transport and the big and with high costs problem of installation difficulty degree greatly.

Description

Projection screen

Technical Field

The utility model relates to an improvement of projection screen structure.

Background

In the ultra-short-focus projection field, the projection screen can provide relatively better environment light interference resistance, and the hard screen guarantees the flatness of the projection surface. The two are combined to provide complete product performance experience for customers. Although the hard projection screen has excellent performance and large size, occupies indoor space when not used after the installation, is inconvenient to store, has large size, brings great difficulty for production, transportation and installation, and further leads to the increase of the cost of the packaging, transportation and installation.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a modular folding projection screen, it is folding, and then has reduced the difficult degree and the cost of projection screen's packing transportation, transport and installation.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

the utility model provides a projection screen, is including telescopic expansion bracket and a plurality of projection screen module, each projection screen module all includes the projection screen body and link, the projection screen body rotates to set up on the link, the link is connected with the expansion bracket in order to stretch out or contract at the expansion bracket with its synchronous motion, is provided with on the projection screen body to rotate at its relative link and opens the connection structure of back in order to connect rather than adjacent projection screen body, when the expansion bracket is opened, a plurality of projection screen bodies connect gradually and coplane.

Further, the projection screen body is including first side and the relative second side that sets up with first side, connection structure is including forming first bayonet socket on the first side of the projection screen body with the second bayonet socket on the second side of the projection screen body, first bayonet socket card on the first side is gone into rather than the second bayonet socket of the adjacent projection screen body in, the second bayonet socket on the second side rather than the first bayonet socket chucking cooperation of the adjacent projection screen body.

Furthermore, the expansion bracket at least comprises a group of expansion bracket, each group of expansion bracket comprises a plurality of expansion units, each expansion unit comprises 2 mutually hinged supporting rods, and the end parts of the supporting rods of the plurality of expansion units are sequentially hinged.

Further, the connecting frame is connected to the hinge point position of the supporting rod or the supporting rod.

Furthermore, the projection screen body comprises a screen support frame and a screen film attached to the screen support frame.

Furthermore, the screen support frame is rotatably connected with the connecting frame through a rotating shaft.

Furthermore, the sum of the widths of the plurality of screen supporting frames is the same as the distance between the hinge points at the two ends of the telescopic frame when the telescopic frame is unfolded to the maximum state.

Furthermore, the width of each screen support frame is the same as the distance between the adjacent hinge points when the telescopic frame is unfolded to the maximum state.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the utility model provides a projection screen, the concrete structure of which comprises a telescopic frame and a plurality of projection screen modules, each projection screen module correspondingly comprises a projection screen body and a connecting frame, the connecting frame is connected with the telescopic frame, the projection screen body can rotate relative to the connecting frame, thus, when in use, the telescopic frame can be adjusted to expand, and then the connecting frame connected with the projection screen body and the projection screen body are expanded together with the projection screen body, after the expansion is completed, all the projection screen bodies are rotated relative to the connecting frame to expand, then the projection screen bodies are connected in sequence through the connecting structure to realize the connection between the projection screen bodies, thereby forming a projection screen with larger whole size, when in use, the projection screen bodies can be rotated to the position vertical to the projection plane, and then the telescopic frame is not suitable for folding to drive the projection screen module to be folded and stored, realized that folded cascade accomodates and can not occupy indoor very big space when not being suitable for, simultaneously, owing to it has carried out the partitioning setting with the projection screen module, then need not to set up to great size like this, avoided because of the big production, transportation, assurance and the installation difficulty, the problem with high costs that lead to of size.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

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

Fig. 1 is a rear view of the projection screen of the present invention;

fig. 2 is a schematic structural diagram of the projection screen body of the projection screen according to the present invention in an expanded state;

FIG. 3 is a schematic view of a folded state of a projection screen according to the present invention;

fig. 4 is a schematic structural diagram of a projection screen module of the projection screen of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention provides an embodiment of a projection screen, which is shown in fig. 1-4, and comprises a telescopic frame 100 and a plurality of projection screen modules 200, wherein the plurality of projection screen modules 200 are all connected to the telescopic frame 100, the projection screen module 200 is combined to form an integral projection screen, and specifically, each projection screen module 200 in this embodiment includes a projection screen body 210 and a connection frame 220, the projection screen 210 is rotatably connected to the connecting frame 220, the connecting frame 220 is correspondingly connected to the telescopic frame 100 to move synchronously with the telescopic frame 100 when the telescopic frame 100 is extended or contracted, the connection between the whole projection screen module 200 and the telescopic frame 100 is realized by connecting the connection frame 220 with the telescopic frame 100, when the telescopic frame 100 is unfolded or folded, the projection screen module 200 connected with the telescopic frame is driven to be unfolded or folded; the projection screen curtain 210 is provided with a connection structure for connecting the adjacent projection screen curtain 210 after the projection screen curtain is rotated and opened with respect to the connection frame 220, and when the projection screen module 200 is unfolded with the expansion bracket 100, the force can be applied to the projection screen 210 to rotate the projection screen 210 around the connecting frame 220, preferably, the projection screen 210 rotates 90 degrees clockwise relative to the connecting frame 220 in this embodiment, so as to unfold the projection screen 210, each projection screen body 210 is rotated 90 degrees with respect to the connecting frame 220 connected thereto, to be opened by rotation, when each projection screen body 210 is rotated and opened, the adjacent projection screen bodies 210 are connected with each other through the connection structure 300 arranged on the projection screen body 210, so that a complete projection screen is formed, and each projection screen body 210 is coplanar, thereby ensuring the smoothness and stability of the projection screen formed by the plurality of projection screen bodies 210.

Specifically, the projection screen body 210 in this embodiment includes a first side 213 and a second side 214 opposite to the first side 213, the first side 213 and the second side 214 may be a right side and a left side of the projection screen body 210 opposite to each other, the connection structure 300 includes a first bayonet 310 formed on the first side 213 of the projection screen body 210 and a second bayonet 320 formed on the second side 214 of the projection screen body 210, the first bayonet 310 on the first side is clamped into the second bayonet 320 of the corresponding second side 214 of the projection screen body 210 adjacent to the first side, and the second bayonet 320 on the second side 214 is in clamping fit with the first bayonet 310 of the first side 213 of the projection screen body 210 adjacent to the second side. The connection and matching between the two projection screen bodies 210 are realized through the matching of the second bayonet 320 and the first bayonet 310. Preferably, the telescopic frame 100 in this embodiment at least includes a set of telescopic frames 110, that is, when the telescopic frames 110 are disposed, a plurality of sets of one set or more than 2 sets may be disposed, each set of telescopic frames 110 includes a plurality of telescopic units 111, each telescopic unit 111 includes 2 support rods 111-1 hinged to each other, and ends of the support rods 111-1 of the plurality of telescopic units 111 are sequentially hinged together to form a set of telescopic frames 110. The support rod 111-1 is a hollow or solid rectangular or cylindrical rigid body. The 2 support rods 111-1 hinged to each other are arranged in a cross pattern of "XX", and preferably, the 2 support rods 111-1 hinged to each other are hinged at the intersection of the 2 rods. The end parts of the adjacent support rods 111-1 in all the telescopic units 111 are sequentially and correspondingly connected to form a telescopic bracket 110, and the end parts of the support rods 111-1 of the telescopic units 111 forming the telescopic bracket 110 are sequentially connected, so that the whole telescopic bracket 110 can only be extended to a preset extension position, and cannot be extended when being extended again. To ensure that the entire telescoping mast 100 can support the projection screen, the load carrying capacity of the entire telescoping mast 100 should be greater than the total mass of the plurality of projection screen modules 200.

To accomplish the connection between the link frame 220 and the telescopic frame 100, the link frame 220 is connected to the support rod 111-1 or the hinge point of the support rod 111-1. When the connecting frame 220 is connected at the hinge point of the 2 support rods 111-1, the 2 support rods 111-1 can be hinged through the connecting shaft, and the connecting shaft is simultaneously connected and fixed on the connecting frame 220 to realize the connection and fixation of the 3 support rods; of course, the connecting frame 220 may be connected to one of the support rods 111-1 at a position far from or near the hinge point, which is not particularly limited herein.

Preferably, the projection screen body 210 includes a screen support 211 and a screen film 212 attached to the screen support 211, and the screen film 212 may be a film with optical properties, and has related projection optical functions, and may specifically adopt an optical film existing in the prior art, which is not limited herein. The optical film is attached to a face of the screen support 211, and the screen support 211 serves as a structural support for the optical film.

Preferably, the screen supporting frame 211 is rotatably connected to the connecting frame 220 through a rotating shaft 400.

The width of screen support frame 211 and the expansion bracket 100 expand the distance of 2 adjacent pin joints when to the maximum state the same in order to ensure when whole telescopic bracket 110 expands, the width of a plurality of screen support frames 211 is the same with the length when the maximum tensile state of expansion bracket 100, and then also can realize seamless connection between a plurality of screen support frames 211 when guaranteeing that expansion bracket 100 fully expands.

When the telescopic frame 100 is used, the telescopic frame 100 is pulled away from the contraction position, and the plurality of projection screen modules 200 are driven by the telescopic frame 100 to be pulled away as the plurality of projection screen modules 200 are connected with the telescopic frame 100. When the telescoping mast 100 is extended to the maximum extended position, it can no longer be extended. At this time, all the projection screen bodies 210 are rotated around the corresponding connection frames 220, preferably, the projection screen bodies 210 in this embodiment are rotated clockwise 90 degrees around the connection frames 220 to a position parallel to the projection plane, the projection plane referred to in this embodiment is a plane for projection, the influence of projection on the projection screen bodies 210 is mapped onto the projection plane to realize projection, and the adjacent projection screen bodies 210 are tightly connected through the connection structure 300 to form a complete projection screen.

After use, the projection screen body 210 is rotated relative to the connecting frame 220 to a position perpendicular to the projection plane, the telescopic frame 100 is retracted, and all the projection screen modules 200 are synchronously folded to the initial position along with the telescopic frame 100.

The projection screen in this embodiment, divide into a plurality of projection screen modules 200 with whole projection screen, when using, the accessible expand expansion bracket 100 and a plurality of projection screen module 200 realize the projection function can, then need not to set up the great projection screen of size like this, because whole projection screen is divided into a plurality of little projection screen bodies 210, production, packing, the transportation only need to a plurality of sizes less projection screen bodies 210 operate can, avoided because of the big production that leads to of size, packing, the transportation difficulty and problem with high costs.

The projection screen in this embodiment can also shrink the expansion bracket 100 when not in use, and rotate the projection screen body 210 to realize folding accommodation, thereby avoiding the problem of occupying indoor space when not in use and also being placed indoors.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. The utility model provides a projection screen, its characterized in that, including telescopic expansion bracket and a plurality of projection screen module, each projection screen module all includes the projection screen body and link, the projection screen body rotates to set up on the link, the link is connected with the expansion bracket in order to stretch out or with its synchronous motion when the expansion bracket contracts, is provided with on the projection screen body to rotate at its relative link and opens the back with the connection structure rather than the adjacent projection screen body, when the expansion bracket was opened, a plurality of projection screen bodies connected gradually and coplane.

2. The projection screen of claim 1, wherein the projection screen body includes a first side and a second side opposite to the first side, the connection structure includes a first bayonet formed on the first side of the projection screen body and a second bayonet formed on the second side of the projection screen body, the first bayonet on the first side is clamped into a second bayonet of the projection screen body adjacent to the first bayonet, and the second bayonet on the second side is clamped and matched with the first bayonet of the projection screen body adjacent to the second bayonet.

3. The projection screen of claim 1 wherein the telescoping support comprises at least one set of telescoping supports, each set of telescoping supports comprising a plurality of telescoping units, each telescoping unit comprising 2 support rods hinged to each other, the ends of the support rods of the plurality of telescoping units being hinged in sequence.

4. A projection screen according to claim 3 wherein the link is attached to the support rod at or at the location of a hinge point of the support rod.

5. The projection screen of claim 1, wherein the projection screen body comprises a screen support frame and a screen film attached to the screen support frame.

6. The projection screen of claim 5 wherein the screen support bracket is pivotally connected to the link bracket by a pivot.

7. The projection screen of claim 5 wherein the sum of the widths of the plurality of screen support brackets is the same as the distance between the hinge points at the ends of the telescoping bracket when it is extended to its maximum position.

8. A projection screen according to claim 5 or claim 7 wherein the width of each screen support bracket is the same as the distance between adjacent hinge points when the telescopic bracket is extended to its maximum position.