TW201447467A - Foldable projection screen having flat speakers - Google Patents

Abstract

The present invention relates to a foldable projection screen having flat speakers. The foldable projection screen has a folding plate, a projection screen, two flat speakers and an audio cable. The projection screen is mounted on and is flush with an inner surface of the folding plate. The folding plate includes multiple foldable panels, and the flat speakers are respectively mounted on two inner surfaces of two opposite foldable panels. When the folding plate is folded inward, the flat speakers are also folded with the folding plate, such that a volume of the folded foldable projection screen is reduced for convenience of carriage. When using the foldable projection screen, a user only needs to unfold the folded foldable projection screen, and sound angles of the flat speakers can be adjusted by adjusting the foldable panels. In conclusion, the foldable projection screen is easy to store, to carry and to use.

Description

Folding projection screen device with built-in flat speaker

This creation is about a projection screen, especially a projection screen with built-in flat speakers and easy to carry.

A projector is a video playback device that is commonly used today. It is usually connected to a computer to obtain a corresponding video signal. The projector decodes the video signal and projects the video image onto a plane in a light source manner. In the entire projection system, all the light sources are provided by the projector, and the projected plane has a great influence on the sharpness of the image. Therefore, the user usually chooses to project the image onto a projection screen, and the projection screen The function is to spread and reflect all the light evenly, so that the user can see a clear image from the projection screen.

However, the projection screen is usually rolled up in a long cylindrical shape when not in use, and the rolled projection screen is not only long in length but also small in volume, so it is not suitable for the user to carry with him; It is also necessary to set the rolled projection screen at a high point, and then roll the projection screen downward and expand it. Therefore, the projection screen can usually be fixedly disposed on the ceiling or the wall. The screen is unfavorable, and the places where it can be used are limited. Moreover, although there are mobile projection screens on the market, they are equipped with a curtain bracket. Although they can be moved at will, the projection screen and the bracket must be moved. It is still inconvenient to use.

In addition, because the projector does not have a sound source output function, the user usually externally connects a group of speakers to the computer to receive the sound source signal and output the sound, but also causes the user to use the projector in addition to the projection screen and the audio output device. In addition to carrying a set of speakers, it is not conducive to the convenience of handling and use.

In view of the defects of the projection screen, the main purpose of this creation is to provide a folding projection screen device with a built-in flat speaker.

The main technical means for achieving the above purpose is that the folding projection screen device comprises: a folding plate having a long strip-shaped first connecting portion, two first flat plates and two second flat plates; One side of the first flat plate is respectively pivotally connected to two opposite long sides of the first connecting portion; and the two second flat plates are pivotally connected to the other side of the two first flat plates respectively; An inner surface of the two first plates attached to the folding plate; two planar speakers respectively fixed to the inner surfaces of the two second plates; and an audio source line comprising an audio source connector and two wires electrically connected to the sound source connector An electric wire; wherein the two electric wires are electrically connected to the two planar horns, respectively.

By the above means, when the folding projection screen device of the present invention is not in use, the folding plate is folded inward with the first connecting portion as a fold line, so that the two first flat plates together with the projection screen of the inner surface thereof are folded inward. And then the two second plates together with the plane horn of the inner surface thereof are folded inward, and the two flats are The face speaker is folded between the two first plates, so the overall size after the folding is reduced, and it is easy to store and carry; when it is used, the first and second plates are spread out, and the projection cloth can be flattened. The screen is projected, and by adjusting the angle between the second panel and the first panel, the sound direction of the two plane speakers can be adjusted, so that the projection screen has a sounding function, and the use of the external speaker is reduced.

10‧‧‧Folding board

11‧‧‧ First connection

111‧‧‧ side panels

112‧‧‧ accommodating space

12‧‧‧ first tablet

13‧‧‧ second tablet

131‧‧‧Second connection

14‧‧‧提提

141‧‧‧ Fixed Department

15‧‧‧ book buckle

151‧‧‧ buckle

16‧‧‧Deduction Department

20‧‧‧Projection screen

30‧‧‧ flat speakers

31‧‧‧Frame

32‧‧‧Electret sounding layer

33‧‧‧ vocal holes

32'‧‧‧Vibration membrane

33’‧‧‧Vibration film

34‧‧‧protective fabric

40‧‧‧ audio source line

41‧‧‧Source connector

42‧‧‧Wire

1A is a perspective external view of a first preferred embodiment of the present foldable projection screen device.

1B is a perspective external view of a second preferred embodiment of the present foldable projection screen device.

Figure 2 is a top plan view of a first preferred embodiment of the inventive foldable projection screen device.

Figure 3 is a view showing the state of use of the first preferred embodiment of the present foldable projection screen device.

Fig. 4 is a view showing another use state of the first preferred embodiment of the present foldable projection screen device.

Figure 5 is an exploded view of the planar horn of the inventive folding projection screen device.

Figure 6 is an exploded view of another planar horn of the inventive folding projection screen device.

Fig. 7 is a top view showing the use state of the first preferred embodiment of the present foldable projection screen device.

Fig. 8 is a top view showing another use state of the first preferred embodiment of the present foldable projection screen device.

Referring to FIG. 1A to FIG. 4 and FIG. 7 , the first preferred embodiment of the present folding projection screen device comprises a folding board 10 , a projection screen 20 , a two-plane speaker 30 and an audio source line 40 .

The folding plate 10 has a long strip-shaped first connecting portion 11 , two first flat plates 12 , two second flat plates 13 and two handles 14 . One side of the two first flat plates 12 are respectively pivotally connected to two opposite long sides of the first connecting portion 11 , and the connection between each first flat plate 12 and the first connecting portion 11 as an axis relative to the first connection The second portion 13 has a long second connecting portion 131. The second connecting portion 131 is pivotally connected to the second plate 13 by a long side. The second connecting portion is connected to the second plate 13 . The connection between the second plate 13 and the second plate 13 is pivoted relative to the second plate 13 , and the other long side of the second connecting portion 131 is pivotally connected to the other of the two first plates 12 . On the side, each of the second connecting portions 131 can pivot with respect to the first flat plate 12 as an axis of the connection with the first flat plate 12; each of the handles 14 can be a flexible band, such as a rope, each of the handles 14 Corresponding second connecting portions 13 are formed at the two ends, and the two ends respectively have a fixing portion 141 for fixing the handle 14 to the corresponding second connecting portion 131 for convenient transportation by the user; 1B, which is a second preferred embodiment of the creation of a folding projection screen device, wherein the folding plate 10 further has a book strip 1 5 and a fastening portion 16, the end of the buckle strip 15 is disposed on an outer surface of one of the first flat plates 12, and the free end of the buckle strip 15 has a buckle portion 151; the fastening portion 16 is correspondingly buckled The portion 151 is disposed on the outer surface of the other first flat plate 12 such that the buckle portion 151 can be fastened to the fastening portion 16 .

The projection screen 20 is disposed on the folding board 10, and the projection The shadow screen 20 is flatly attached to the inner surface of the two first flat plates 12; further, since the projection screen 20 has a certain thickness, as shown in FIG. 2, the two first flat plates 12 are protruded when folded. Therefore, in order to avoid the crease of the projection screen 20, the first connecting portion 11 is preferably designed in a U shape, that is, the first connecting portion 11 and the two first flat plates 12 are connected to the two side plates 111. The accommodating space 112 is formed between the first connecting portion 11 and the two side plates 111. When the projection screen 20 is folded in half, the two first flat plates 12 are protruded into the accommodating space 112. Without creases.

As shown in FIG. 2, FIG. 3 and FIG. 4, the two planar horns 30 are respectively fixed on the inner surfaces of the two second flat plates 13, so that the two planar horns 30 can be folded inwardly onto the two first flat plates 12; The length and width of each of the planar horns 30 are shorter than the length and width of the first slab 12, so that when the two first slabs are folded inward, the planar horn 30 can be folded over the two first slabs 12 between. Referring to FIG. 5 , each of the planar horns 30 has two frames 31 , an electret sounding layer 32 and a protective cloth layer 34 . The electret sounding layer 32 is sandwiched between the two frames 31 and the A plurality of sound emitting holes 33 are formed through the electret sounding layer 32. The electret sounding layer 32 emits sound through the sound emitting holes 33 when receiving the sound source layer; the protective cloth layer 34 covers the entire planar speaker 30. To prevent dust from entering the planar horn 30; further, as shown in FIG. 6, the electret sounding layer 32 can be replaced with a diaphragm 32', and the diaphragm 32' is sandwiched between the two frames 31. A vibrating piece 33' is flatly attached to one side of the vibrating film 32', and the vibrating piece 33 generates vibration when receiving the sound source signal, thereby driving the vibrating film 32 to generate vibration to make the surrounding air sound.

Referring to FIG. 4, the audio source line 40 has a sound source connection. The first and second wires 42 are respectively corresponding to the two planar horns 30, and one end of each of the wires 42 is electrically connected to the corresponding planar horn 30, and the other end is electrically connected to the sound source connector 41.

Referring to FIG. 1A, FIG. 1B and FIG. 2, when the folding projection screen device of the present invention is not in use, the folding plate 10 is folded inwardly with the first connecting portion 11 as a fold line, so that the two first flat plates 12 are folded. The projection screen 20 together with the inner surface thereof is folded inwardly, and the two second flat plates 13 are folded inwardly together with the planar horn 30 of the inner surface thereof, and the two-plane horn 30 is folded between the two first flat plates 12 Therefore, the overall size after the folding is reduced, and it is easy to store and carry.

Referring to FIG. 3, FIG. 4, FIG. 7 and FIG. 8, when the user wants to use the original folding projection screen device, the first flat plate 12 and the second flat plate 13 are spread out, and the flat plate can be flattened. The projection screen 20 is projected, and by adjusting the angle between the second flat plate 13 and the first flat plate 12, the sounding direction of the two-plane speaker 30 can be adjusted, so that the folded folding projection screen device of the present invention has a sounding function, thereby reducing Use of an external speaker.

In summary, the present folding projection screen device does solve the problem that the existing projection screen is difficult to handle and set, and the built-in flat speaker 30 is provided for the user to play the sound, compared with the past user to simultaneously play and release. For images and sounds, projectors, computers, speakers and existing projection screens are required. The user only needs the projector, the computer and the creative folding projection screen device to achieve the same effect, reducing the use of external speakers; The small volume of the flat horn 30 also enables the folding projection screen device of the present invention to further reduce its volume for the purpose of convenient handling and storage.

10‧‧‧Folding board

11‧‧‧ First connection

111‧‧‧ side panels

112‧‧‧ accommodating space

12‧‧‧ first tablet

13‧‧‧ second tablet

131‧‧‧Second connection

14‧‧‧提提

20‧‧‧Projection screen

30‧‧‧ flat speakers

Claims (10)

A folding projection screen device with a built-in flat horn includes: a folding plate having a long strip-shaped first connecting portion, two first flat plates and two second flat plates; wherein the two first flat plates are One side is respectively pivotally connected to the two opposite long sides of the first connecting portion; and the two second flat plates are respectively pivotally connected to the other side of the two first flat plates; a projection screen is flatly attached to the folding The inner surface of the two first plates of the board; the two planar horns are respectively fixed on the inner surfaces of the second slabs; and the audio source line comprises an audio source connector and two wires electrically connected to the audio source connector; Two wires are electrically connected to the two planar speakers, respectively. The folding projection screen device of claim 1, wherein each of the planar horns has two frames and an electret sounding layer, the electret sounding layer is sandwiched between the two frames, and the electret sounds A plurality of sound holes are formed through the layer, and the sound layer of the electret sounds through the sound hole when receiving the sound source signal. The folding projection screen device of claim 1, wherein each of the planar horns has two frames, a diaphragm and a vibrating piece; the vibrating film is sandwiched between the two frames; the vibrating piece is flatly attached to One of the vibrating membranes generates vibration when receiving the sound source signal. The folding projection screen device of any one of claims 1 to 3, wherein the first connecting portion and the two first plates are connected to the two side plates with two side plates, so that the first connecting portion and the two side plates are The space constitutes an accommodation space. The folding projection screen device of any one of claims 1 to 3, wherein a second connecting portion of the strip is further pivotally connected between the second plate and the first plate. The folding projection screen device of claim 4, wherein the second plate and the first plate are further pivotally connected to a second connecting portion. The folding projection screen device of claim 5, wherein each of the second connecting portions further has a handle. The folding projection screen device of claim 7, wherein each of the handles is a flexible belt, the two ends of which are inserted into the corresponding second connecting portions, and the two ends respectively have a fixing portion for fixing the handle In the second connecting portion. The folding projection screen device of any one of claims 1 to 3, wherein the folding plate further has a book strip and a connecting portion; the end of the book strip is disposed on one of the first plates The outer surface, the free end of the book strip has a buckle; the connection is disposed on the outer surface of the other first flat plate and corresponds to the buckle. The folding projection screen device of claim 2 or 3, wherein each of the planar horns further has a protective cloth layer covering the entire planar horn.