TWI465831B - Portable projection screen device - Google Patents

Description

Portable projection screen device

The invention relates generally to a projection screen device, and more particularly to a portable projection screen device.

A general projection device needs to project a display screen onto a projection screen or a plane such as a whiteboard. However, when the user goes out to a meeting, the venue of the meeting does not necessarily have a plane suitable for projection, and the user needs to additionally carry a projection screen device.

Please refer to FIG. 1 , which is a perspective view of a conventional projection screen device 100. The projection screen device 100 includes a curtain 101, a reel 102, and brackets 103, 104. At the time of storage, the curtain 101 is taken up in the reel 102, and the curtain 101 is supported by the holders 103 and 104 at the time of use. However, the erection of the aforementioned projection screen device 100 is very complicated and time consuming, resulting in inconvenience in use. In addition, the aforementioned projection screen device has complicated components, which increases the cost of production.

In order to solve the above-mentioned shortcomings of the prior art, the object of the present invention is to provide A portable projection screen device is provided on a folding substrate to simplify assembly of the projection screen device and reduce production cost.

In order to achieve the above object, the present invention provides a portable projection screen device comprising a foldable substrate, a first limiting component, a second limiting component and a curtain. The substrate includes a first flat portion, a second flat portion, and a bent portion. The bent portion is connected to the first flat plate portion and the second flat plate portion, and the bent portion includes a receiving groove. The first limiting component includes a first limiting body and a first fastening component. The first limiting body is disposed on the first flat portion. The first fastening portion is disposed on the first limiting body. The second limiting component includes a second limiting body and a second fastening component. The second limiting body is disposed on the second flat portion. The second fastening portion is disposed on the second limiting body. The foregoing curtain is disposed on the first limiting component and a second limiting component. Wherein, when the first flat plate portion and the second flat plate portion are overlapped with each other via the bent portion, the first engaging portion and the second engaging portion are located in the receiving groove. When the substrate is unfolded, the first engaging portion and the second engaging portion are in contact with each other, and a force is provided to cause the first flat portion to be unfolded at a predetermined position with respect to the second flat portion.

In order to achieve the above object, the present invention further provides a portable projection screen device comprising a substrate, a limiting mechanism and a curtain. The substrate includes a first flat plate portion, a second flat plate portion, a third flat plate portion, a first bent portion and a second bent portion. The first bending portion is connected to the first flat plate portion and the second flat plate portion, and the first bent portion includes a first receiving groove. The second bending portion is connected to the second flat portion and the third flat portion, and the second bent portion includes a second receiving groove. The limiting mechanism is disposed on the first flat portion and the second a flat plate portion and a third flat plate portion. The aforementioned curtain is disposed on the substrate and/or the limiting mechanism. Wherein, when the first flat plate portion, the second flat plate portion, and the third flat plate portion are overlapped with each other via the first bent portion and the second bent portion, the portion of the limiting mechanism is located at the first receiving groove and the second receiving portion In the groove, when the substrate is unfolded, the limiting mechanism provides a force to expand the first flat portion, the second flat portion and the third flat portion at a predetermined position.

In summary, the projection screen device of the present invention only needs to unfold the substrate during use, and only needs to fold the substrate during storage to complete the storage, thereby improving the convenience in use. In addition, fewer components constituting the projection screen device can reduce production costs.

Please refer to FIG. 2 to FIG. 4 , FIG. 2 is a perspective view of a first embodiment of the projection screen device 1 of the present invention, and FIG. 3 is an exploded view of the first embodiment of the projection screen device 1 of the present invention. 4 is a top plan view of a first embodiment of a projection screen device of the present invention. In Fig. 2, the projection screen device 1 is in an unfolded state. The projection screen device 1 includes a substrate 10, a limiting mechanism 20, and a curtain 30. The limiting mechanism 20 is disposed on the substrate 10. The limiting mechanism 20 can provide a force to the substrate 10 to expand the substrate 10 to a predetermined position. The curtain 30 is disposed on the limiting mechanism 20. The user can stand the projection screen device 1 on a plane such as a desktop and project a projection device (not shown) onto the curtain 30.

The substrate 10 includes a first flat plate portion 11 , a second flat plate portion 12 , a third flat plate portion 13 , bent portions 14 , 15 , and a bracket portion 16 . The first flat plate portion 11, the second flat plate portion 12, and the third flat plate portion 13 have a plate-like structure.

The bent portion 14 has a U-shaped structure and defines a receiving groove 141. The two ends of the bent portion 14 are respectively connected to the first flat plate portion 11 and the second flat plate portion 12. The bent portion 15 has a U-shaped structure and defines a receiving groove 151. The two ends of the bent portion 15 are respectively connected to the second flat plate portion 12 and the third flat plate portion 13. The aforementioned receiving grooves 141, 151 can respectively extend along an extending direction D1.

The bracket portion (first bracket portion) 16 is disposed on the first flat plate portion 11. When the substrate 10 is unfolded, the bracket portion 16 is bent with respect to the first flat plate portion 11 so that the substrate 10 stands on a plane such as a table top. In this embodiment, the bracket portion 16 can be bent to form a hollow triangular prism, so that the substrate 10 can stand on the plane more stably.

The first flat plate portion 11 and the bent portion 14 can be bent relative to each other with a first axis AX1 as an axis. The bent portion 14 and the second flat plate portion 12 can be bent relative to each other by a second axis AX2. The flat plate portion 12 and the bent portion 15 can be bent relative to each other with a third axis AX3 as an axis. The bent portion 15 and the third flat plate portion 13 can be bent relative to each other with a fourth axis AX4 as an axis, and the first flat plate portion 11 and The bracket portion 16 may be axially bent about a fifth axis AX5, and the first axis AX1, the second axis AX2, the third axis AX3, the fifth axis AX5, and the extending direction D1 are parallel to each other.

The stopper mechanism 20 is provided in the first flat plate portion 11, the second flat plate portion 12, and the third flat plate portion 13. In this embodiment, the limiting mechanism 20 includes a The first limiting component 21, a second limiting component 22, a third limiting component 23 and a fourth limiting component 24. The first limiting component 21 includes a first limiting body 211 and a first fastening component 212. The first limiting body 211 is a plate-like structure and is disposed on the first flat plate portion 11 . The first fastening portion 212 is disposed on the first limiting body 211 . The first fastening portion 212 includes a first magnetic unit 213.

The second limiting component 22 includes a second limiting body 221 and a second fastening component 222 . The second limiting body 221 is a plate-like structure and is disposed on the second flat plate portion 12 . The second fastening portion 222 is disposed on the second limiting body 221 . The second fastening portion 222 includes a second magnetic unit 223.

The third limiting component 23 includes a third limiting body 231 and a third fastening component 232 . The third limiting body 231 is a plate-like structure and is disposed on the second flat plate portion 12 . The third fastening portion 232 is disposed on the third limiting body 231 . The third fastening portion 232 includes a third magnetic unit 233. The second limiting body 221 and the third limiting body 231 may be an integrally formed structure.

The fourth limiting component 24 includes a fourth limiting body 241 and a fourth fastening portion 242 . The fourth limiting body 241 is a plate-like structure and is disposed on the third flat plate portion 13 . The fourth fastening portion 242 is disposed on the fourth limiting body 241 . The fourth fastening portion 242 includes a fourth magnetic unit 243.

The screen 30 is disposed on the first limiting body 211 , the second limiting body 221 , the third limiting body 231 , and the fourth limiting body 241 .

When the user wants to use the projection screen device 1, the substrate 10 can be unfolded to provide a force for the limiting mechanism 20 to make the first flat portion 11 and the second flat plate. The portion 12 and the third flat portion 13 are unfolded at a predetermined position. That is, the first fastening portion 212 and the second fastening portion 222 are in contact with each other and the first magnetic unit 213 and the second magnetic unit 223 are attracted to each other, so that the first fastening portion 212 and the second fastening portion 222 are interlocked with each other. Combine, and then produce a force. The first flat portion 11 can be deployed on the same plane with respect to the second flat portion 12 by using the aforementioned tension, and the first limiting body 211, the first engaging portion 212, the second limiting body 221, and the second The fastening portions 222 are located on the same plane.

Similarly, the third fastening portion 232 and the fourth fastening portion 242 are also in contact with each other, and the third magnetic unit 233 and the fourth magnetic unit 243 are attracted to each other, so that the third fastening portion 232 and the fourth fastening portion 242 are interlocked with each other. And a force is generated, and the second flat portion 12 is unfolded relative to the third flat portion 13 and located on the same plane by the tension, and the third limiting body 231, the third engaging portion 232, and the fourth The limiting body 241 and the fourth fastening portion 242 are located on the same plane.

In other words, the tension provided by the limiting mechanism 20 causes the first limiting body 211, the second limiting body 221, the third limiting body 231, and the fourth limiting body 241 to be on the same plane. The curtain 30 disposed on the first limiting body 211, the second limiting body 221, the third limiting body 231, and the fourth limiting body 241 forms a plane for projection by the projection device.

In addition, in this embodiment, the screen 30 may not be provided, and the projection device may be directly projected onto the limiting mechanism 20.

Please refer to FIG. 5 and FIG. 6 . FIG. 5 is a perspective view of the projection screen device 1 of the present invention in a stored state, and FIG. 6 is a top plan view of the projection screen device 1 of the present invention in a stored state. When the user wants to accommodate the projection screen device 1, the first flat portion 11, the second flat portion 12, and the third flat portion 13 can be simply bent after being bent through the bent portion 14 and the bent portion 15 to make the first The flat plate portion 11, the second flat plate portion 12, and the third flat plate portion 13 are stacked on each other. The bracket portion 16 may also be bent over the bent portion 15 and the second flat portion 12 via bending. At this time, the portion of the limiting mechanism 20 is located in the accommodating groove 141 and the accommodating groove 151, that is, the first fastening portion 212 and the second fastening portion 222 are located in the accommodating groove 141, and the third fastening is performed. The portion 232 and the fourth fastening portion 242 are located in the receiving groove 151. As shown in Fig. 5 and Fig. 6, the curtain 30 is covered by the substrate 10, whereby the curtain 30 can be protected from soiling.

By folding as described above, the volume of the projection screen device 1 can be greatly reduced to facilitate carrying by the user.

Please refer to Fig. 7, which is an exploded view of a second embodiment of the projection screen device 1a of the present invention. The difference from the first embodiment is that different limit mechanisms 40 are employed. The limiting mechanism 40 includes a plurality of first limiting elements 41 , a plurality of second limiting elements 42 , a first spacing plate 43 , a second spacing plate 44 , and a third spacing plate 45 . The first limiting member 41 is disposed on the first flat plate portion 11 and the second flat plate portion 12 , and the second limiting member 42 is disposed on the second flat plate portion 12 and the third flat plate portion 13 . The first limiting element 41 and the second limiting element 42 can be a metal dome having a curved surface 411, 421. The curved surfaces 411 and 421 are oriented toward the substrate 10. When the first limiting element 41 and the second limiting element 42 are bent, the first limiting element 41 and the second limiting element 42 provide a force to the substrate 10.

The first partitioning plate 43 is disposed on the first flat plate portion 11 and includes a plurality of first sliding slots 431 for receiving the first limiting component 41. The second spacers 44 are disposed on the second flat portion 12 and include a plurality of second sliding slots 441 for receiving the first limiting component 41 and the second limiting component 42. The third spacer 45 is disposed on the third flat portion 13 and includes a plurality of third sliding slots 451 for receiving the second limiting member 42. The first limiting element 41 and the second limiting element 42 can be limited by the first sliding slot 431, the second sliding slot 441 and the third sliding slot 451.

As in the first embodiment, when the first flat plate portion 11, the second flat plate portion 12, and the third flat plate portion 13 are overlapped with each other via the bent portion 14 and the bent portion 15, the portion of the first limiting member 41 is located The slot 141 is disposed, and a portion of the second limiting member 42 is located in the receiving slot 151. When the substrate 10 is unfolded, the first limiting member 41 provides a force to expand the first flat portion 11 relative to the second flat portion 12 at a first predetermined position, and the second limiting member 42 provides a force for the second flat plate The portion 12 is unfolded relative to the third flat portion 13 at a second predetermined position.

Please refer to Fig. 8, which is a perspective view showing a third embodiment of the projection screen device 1b of the present invention in an unfolded state. The third embodiment is different from the foregoing embodiment in that the projection screen device 1b does not have the first flat portion 13 and the bent portion 15 of the first embodiment and the second embodiment. Projection screen device 1b includes The substrate 10b and the curtain 30b. The substrate 10b includes a first flat plate portion 11b, a second flat plate portion 12b, a bent portion 14b, and two bracket portions 16b. The bracket portion (the first bracket portion and the second bracket portion) 16b may be provided to the first flat plate portion 11b and the second flat plate portion 12b, respectively. The bracket portion 16b may include a magnet unit 161, respectively.

Referring to Fig. 9, there is shown a perspective view of a third embodiment of the projection screen device 1b of the present invention in a stored state. The first flat plate portion 11b, the second flat plate portion 12b, and the bracket portion 16b are stacked on each other, and the magnet units 161 of the bracket portion 16b are attracted to each other, thereby assisting the positioning between the first flat plate portion 11b and the second flat plate portion 12b.

In summary, the projection screen device of the present invention only needs to unfold the substrate during use, and only needs to fold the substrate during storage to complete the storage, thereby improving the convenience in use. In addition, fewer components constituting the projection screen device can reduce production costs.

The present invention has been described above with reference to various embodiments, which are intended to be illustrative only and not to limit the scope of the invention, and those skilled in the art can make a few changes without departing from the spirit and scope of the invention. With retouching. The above-described embodiments are not intended to limit the scope of the invention, and the scope of the invention is defined by the scope of the appended claims.

[Practical Technology]

100‧‧‧Projection screen

101‧‧‧ curtain

102‧‧‧ reel

103, 104‧‧‧ bracket

[this invention]

1, 1a, 1b‧‧‧ projection screen device

10, 10b‧‧‧ substrate

11, 11b‧‧‧ first flat section

12, 12b‧‧‧ second flat section

13‧‧‧ Third flat section

14, 14b‧‧‧ bends

141‧‧‧ accommodating slots

15‧‧‧Bending

151‧‧‧ accommodating slots

16, 16b‧‧‧ bracket

161‧‧‧Magnetic unit

20‧‧‧Limited institutions

21‧‧‧First limit element

211‧‧‧First Limit Body

212‧‧‧First fastening department

213‧‧‧First magnetic unit

22‧‧‧second limit element

221‧‧‧Second limit body

222‧‧‧Second Fasting Department

223‧‧‧Second magnetic unit

23‧‧‧ Third limit component

231‧‧‧ Third Limit Body

232‧‧‧The third fastening department

233‧‧‧ Third magnetic unit

24‧‧‧fourth limit component

241‧‧‧ fourth limit body

242‧‧‧fourth fastening department

243‧‧‧fourth magnetic unit

30, 30b‧‧‧ curtain

40‧‧‧Limited institutions

41‧‧‧First limit element

411‧‧‧ Surface

42‧‧‧second limit element

421‧‧‧ Surface

43‧‧‧First partition board

431‧‧‧First chute

44‧‧‧Second spacer

441‧‧‧Second chute

45‧‧‧ third partition

451‧‧‧third chute

AX1‧‧‧ first axis

AX2‧‧‧ second axis

AX3‧‧‧ third axis

AX4‧‧‧fourth axis

AX5‧‧‧ fifth axis

D1‧‧‧ extending direction

Figure 1 is a perspective view of a conventional projection screen device; 2 is a perspective view of a first embodiment of a projection screen device of the present invention; FIG. 3 is an exploded view of a first embodiment of the projection screen device of the present invention; and FIG. 4 is a first view of the projection screen device of the present invention FIG. 5 is a top view of the projection screen device of the present invention in a stored state; FIG. 6 is a top plan view of the projection screen device of the present invention in a stored state; and FIG. 7 is a plan view of the projection screen device of the present invention 2 is an exploded view of a third embodiment of the projection screen device of the present invention in an unfolded state; and FIG. 9 is a perspective view of the third embodiment of the projection screen device of the present invention in a stored state.

1‧‧‧Projection screen device

10‧‧‧Substrate

11‧‧‧ First flat section

12‧‧‧Second flat section

13‧‧‧ Third flat section

14‧‧‧Bending

141‧‧‧ accommodating slots

15‧‧‧Bending

151‧‧‧ accommodating slots

16‧‧‧ bracket

20‧‧‧Limited institutions

21‧‧‧First limit element

22‧‧‧second limit element

23‧‧‧ Third limit component

24‧‧‧fourth limit component

30‧‧‧

AX5‧‧‧ fifth axis

D1‧‧‧ extending direction

Claims (16)

A portable projection screen device includes: a substrate, comprising: a first flat portion; a second flat portion; and a bent portion connected to the first flat portion and the second flat portion, and the curved portion The folding portion includes a receiving slot; a first limiting component, comprising: a first limiting body disposed on the first flat portion; and a first fastening portion disposed on the first limiting body; a second limiting component, comprising: a second limiting body disposed on the second flat portion; and a second fastening portion disposed on the second limiting body; wherein, when the first flat portion is When the second flat portion is overlapped with each other, the first fastening portion and the second fastening portion are located in the receiving groove and are separated from each other. When the substrate is unfolded, the first fastening portion is And the second fastening portions are in contact with each other and overlap each other, and provide a force to expand the first flat plate portion relative to the second flat plate portion at a predetermined position. The portable projection screen device of claim 1, wherein the first fastening portion comprises a first magnetic unit, and the second fastening portion comprises a second magnetic unit, wherein the first fastening portion The first magnetic unit and the second magnetic unit phase when the joint portion and the second fastening portion are in contact with each other Mutual attraction. The portable projection screen device of claim 1, further comprising a screen disposed on the first limiting body and the second limiting body. The portable projection screen device of claim 1, wherein the substrate comprises a first bracket portion disposed on the first flat portion, wherein the first flat portion and the second flat portion are When the bent portions are overlapped with each other, the first bracket portion and the first flat plate portion overlap each other, and when the substrate is unfolded, the first bracket portion is inclined with respect to the first flat plate portion, so that the substrate stands on a on flat surface. The portable projection screen device of claim 4, wherein the substrate comprises a second bracket portion disposed on the second flat portion, wherein the first flat portion and the second flat portion are When the bent portions are overlapped with each other, the second bracket portion and the second flat portion overlap each other, and when the substrate is unfolded, the second bracket portion is inclined with respect to the second flat portion, so that the substrate stands on the on flat surface. The portable projection screen device of claim 1, wherein the first flat portion and the bent portion are axially oppositely bent by a first axis, the bent portion and the second flat portion The second axis may be relatively bent about the axis, and the first axis and the second axis are parallel to each other. A portable projection screen device includes: a substrate, comprising: a first flat portion; a second flat portion; a third flat portion; a first bent portion connected to the first flat portion and the second flat portion, and the first bent portion includes a first receiving groove; and a The second bending portion is connected to the second flat portion and the third flat portion, and the second bent portion includes a second receiving groove; and a limiting mechanism is disposed on the first flat portion, the The second flat portion and the third flat portion, wherein the limiting mechanism comprises: a first limiting component, comprising: a first limiting body disposed on the first flat portion; and a first fastening portion, The second limiting body is disposed on the first limiting body, and the second limiting component comprises: a second limiting body disposed on the second flat portion; and a second fastening portion disposed on the second limiting body Wherein, when the first flat portion, the second flat portion, and the third flat portion are overlapped with each other via the first bent portion and the second bent portion, the first fastening portion and the second portion The fastening portion is located in the first receiving groove and separated from each other, and a part of the limiting mechanism is located in the second receiving portion When the substrate is unfolded, the first fastening portion and the second fastening portion are in contact with each other and overlap each other, and the limiting mechanism provides a force for the first flat portion, the second flat portion, and the The third flat portion is deployed at a predetermined position. The portable projection screen device of claim 7, wherein The limiting mechanism further includes: a third limiting component, comprising: a third limiting body disposed on the second flat portion; and a third fastening portion disposed on the third limiting body; a fourth limiting component, comprising: a fourth limiting body disposed on the third flat portion; and a fourth fastening portion disposed on the fourth limiting body; wherein, when the first flat portion, When the second flat portion and the third flat portion are overlapped with each other via the first bent portion and the second bent portion, the third fastening portion and the fourth fastening portion are located in the second receiving groove The first fastening portion and the second fastening portion provide a first tension to expand the first flat portion relative to the second flat portion, and the third fastening portion and the The fourth fastening portions are in contact with each other and provide a second tension to expand the second flat portion relative to the third flat portion. The portable projection screen device of claim 8, wherein the first fastening portion comprises a first magnetic unit, and the second fastening portion comprises a second magnetic unit, the third fastening portion The fourth magnetic unit includes a fourth magnetic unit, wherein the first magnetic unit and the second magnetic unit are in contact with each other when the first fastening portion and the second fastening portion are in contact with each other When the third fastening portion and the fourth fastening portion are in contact with each other, the third magnetic unit and the fourth magnetic unit are attracted to each other. The portable projection screen device of claim 8, further comprising a screen disposed on the first limiting body, the second limiting body, the third limiting body, and the fourth limit Bit body. The portable projection screen device of claim 7, wherein the substrate comprises a bracket portion disposed on the first flat portion, wherein the bracket portion is opposite to the first flat portion when the substrate is unfolded Tilt so that the substrate stands on a plane. The portable projection screen device of claim 11, wherein the bracket portion is bent to form a hollow triangular prism. The portable projection screen device of claim 7, wherein the first flat portion and the first bent portion are axially oppositely bent by a first axis, the first bent portion and the first bent portion The second flat portion may be axially bent relative to a second axis, and the second flat portion and the second bent portion may be axially bent relative to a third axis, the second bent portion and the third portion The flat plate portion may be axially bent relative to a fourth axis, and the first shaft, the second shaft, the third shaft, and the fourth shaft are parallel to each other. A portable projection screen device includes: a substrate, comprising: a first flat portion; a second flat portion; a third flat portion; a first bent portion connected to the first flat portion and the first a second flat portion, and the first bent portion includes a first receiving groove; a second bending portion is connected to the second flat portion and the third flat portion, and the second bent portion includes a second receiving groove; and a limiting mechanism is disposed on the first flat portion, The second flat portion and the third flat portion, wherein the limiting mechanism comprises: a first limiting member disposed on the first flat portion and the second flat portion; and a second limiting member disposed on the second flat portion The second flat plate portion and the third flat plate portion; wherein when the first flat plate portion, the second flat plate portion, and the third flat plate portion are overlapped with each other via the first bent portion and the second bent portion a portion of the first limiting component is located in the first receiving slot, and a portion of the second limiting component is located in the second receiving slot. When the substrate is unfolded, the first limiting component Providing a first tension to expand the first flat portion relative to the second flat portion at a first predetermined position, and the second limiting member to provide a second tension to the second flat portion relative to the third flat plate The part is deployed in a second predetermined position. The portable projection screen device of claim 14, wherein the first limiting component and the second limiting component are a metal dome having a curved surface, and the curved surface faces the substrate. The portable projection screen device of claim 14, wherein the limiting mechanism comprises: a first spacer, disposed on the first flat portion, and comprising a first sliding slot for accommodating the first a limiting component; a second spacer is disposed on the second flat portion, and includes a second sliding slot for receiving the first limiting component and the second limiting component; and a third spacer disposed on the third The flat portion includes a third sliding slot for receiving the second limiting component.