CN203311154U - Folding projection screen device with built-in flat speakers - Google Patents

Abstract

The utility model relates to a foldable projection screen device with a built-in flat speaker, which comprises a folding plate, a projection screen, two flat speakers and a sound source line; the projection screen is flatly attached to the inner surface of the folding plate, the folding plate has a plurality of foldable flat plates, so the two flat speakers are respectively arranged on the inner surfaces of two opposite flat plates, when the folding plate is folded inwards, the flat speakers on both sides can be folded together, and the size can be reduced compared with the unfolded state, so that it is easy to carry; therefore, the user only needs to unfold the projection screen outwards to flatten it, and the sound angles of the two flat speakers can be adjusted at will, which is not only easy to store and carry, but also easier to use.

Description

Folding projection screen device with built-in flat speakers

technical field

The utility model relates to the field of projection screens, in particular to a foldable projection screen device with a built-in plane speaker.

Background technique

A projector is a common video playback device nowadays. 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 the form of a light source. In the entire projection system, all light sources are provided by the projector, and the projected plane also has a great influence on the clarity of the image. Therefore, users usually choose to project the image onto a projection screen. The function of the projection screen is to All the light is evenly diffused and reflected, so that users can see clear images from the projection screen.

However, when the existing projection screen is not in use, it is usually rolled up and stored in a long tube shape. The rolled up projection screen is not only long in length, but also not small in size, so it is not conducive to the user to carry it; The rolled-up projection screen must be set at a high point, and then rolled out and unfolded. Therefore, the existing projection screen can only be fixedly installed on the ceiling or wall. This type of projection screen It is not easy to move, and the place where it can be used is limited. In addition, although there are mobile projection screens on the market, they are equipped with screen brackets. Although they can be moved freely, the projection screen and bracket must be moved, which is still inconvenient to use.

In addition, because the general projector does not have the audio output function, the user usually connects a set of speakers to the computer to receive the audio signal and output the sound. It is also necessary to carry an additional set of speakers, which is not conducive to the convenience of the user's handling and use.

Utility model content

In view of the defects of existing projection screens, the main purpose of this utility model is to provide a foldable projection screen device with a built-in flat speaker.

In order to achieve the above purpose, the foldable projection screen device with built-in plane speaker of the present invention includes:

A folding plate, which has a strip-shaped first connecting portion, two first flat plates, and two second flat plates; one side of the two first flat plates is respectively pivotally connected to the two sides of the first connecting portion a relatively long side; and the two second flat plates are respectively pivotally connected to the other side of the two first flat plates;

A projection screen, flatly attached to the inner surfaces of the two first flat plates of the folding plate;

two planar horns are respectively fixed on the inner surfaces of the two second flat plates; and

An audio source line includes an audio source connector and two wires electrically connected to the audio source connector; wherein the two wires are respectively electrically connected to the two planar speakers.

Preferably, each of the planar horns has two frames and an electret sounding layer, the electret sounding layer is sandwiched between the two frames, and a plurality of sounding layers are formed through the electret sounding layer. The electret sound-emitting layer can emit sound through the sound-emitting hole when receiving the sound source signal.

Preferably, each of the planar horns has two frames, a vibrating membrane and a vibrating piece; the vibrating membrane is sandwiched between the two frames; the vibrating piece is flatly attached to one side of the vibrating membrane, and the vibrating piece is placed on Vibration can be generated when a sound source signal is received.

Preferably, two side plates are connected to both sides of the first connecting portion and the two first flat plates, so that an accommodating space is formed between the first connecting portion and the two side plates.

Preferably, a long strip-shaped second connecting portion is further pivotally connected between the second flat plate and the first flat plate.

Preferably, a long strip-shaped second connecting portion is further pivotally connected between the second flat plate and the first flat plate.

Preferably, each of the second connecting parts is further provided with a handle.

Preferably, each of the handles is a flexible belt, both ends of which are inserted into the corresponding second connecting portion, and each end of each handle has a fixing portion to fix each handle to the second connecting portion.

Preferably, the folding plate further has a book buckle and a connecting part; one end of the book buckle is arranged on the outer surface of one of the first flat plates, and the free end of the book buckle has a buckle; the connecting part It is arranged on the outer surface of the other first flat plate and corresponds to the buckle.

Preferably, each of the planar speakers further has a protective cloth layer, and the protective cloth layer covers the entire planar speaker.

The beneficial effects of the utility model are:

Through the above means, when the folding projection screen device with built-in plane speaker of the present invention is not in use, the folding plate is folded inward with the first connecting part as the folding line, so that the two first flat plates together with their inner surfaces The projection screen is folded inwards, and then the two second plates are folded inwards together with the plane horns on their inner surfaces, and the two plane horns are folded between the two first plates, so the folded The overall size can be reduced, and it is easy to store and carry; when you want to use it, spread out the first and second flat panels, and then you can flatten the projection screen for projection, and adjust the distance between the second flat panel and the first flat panel The angle can adjust the sounding direction of the two planar speakers, so that the projection screen can also have the sounding function, reducing the use of external speakers.

Description of drawings

FIG. 1A is a three-dimensional appearance view of a first preferred embodiment of a foldable projection screen device with built-in planar speakers according to the present invention.

FIG. 1B is a three-dimensional appearance view of a second preferred embodiment of the foldable projection screen device with built-in planar speakers according to the present invention.

Fig. 2 is a top view of a first preferred embodiment of the foldable projection screen device with built-in planar speakers according to the present invention.

Fig. 3 is a view of the use state of the first preferred embodiment of the foldable projection screen device with built-in planar speakers according to the present invention.

Fig. 4 is another usage state diagram of the first preferred embodiment of the foldable projection screen device with built-in planar speakers according to the present invention.

FIG. 5 is an exploded view of planar speakers of the foldable projection screen device with built-in planar speakers according to the present invention.

6 is an exploded view of another planar speaker of the foldable projection screen device with built-in planar speakers according to the present invention.

Fig. 7 is a top view of the first preferred embodiment of the foldable projection screen device with built-in planar speakers according to the present invention.

Fig. 8 is a top view of another use state of the first preferred embodiment of the foldable projection screen device with built-in planar speakers according to the present invention.

Description of main component symbols:

10 Folding plate 11 The first connecting part

111 Side panels 112 Accommodating space

12 The first plate 13 The second plate

131 Second connection part 14 Handle

141 Fixed part 15 Book buckle belt

151 Buckle 16 Buckle

20 Projection Curtain 30 Flat Speaker

31 Frame 32 Electret Sound Layer

33 sound hole 31’ frame

32’ diaphragm 33’ diaphragm

34 Protective cloth layer 40 Audio cable

41 Audio connector 42 Wire.

Detailed ways

Please refer to Fig. 1A to Fig. 4 and Fig. 7, the first preferred embodiment of the foldable projection screen device with built-in plane speaker of the present utility model includes a folding plate 10, a projection screen 20, two plane Speaker 30 and a sound source line 40 .

The folding board 10 has a strip-shaped first connecting portion 11 , two first flat boards 12 , two second flat boards 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 each first flat plate 12 can be connected with the first connecting portion 11 as an axis relative to the first connecting portion 11. A connecting portion 11 is pivoted; one side of each second flat plate 13 has a strip-shaped second connecting portion 131, and the second connecting portion 131 is pivotally connected to the second flat plate 13 with a long side. The connecting portion 131 can be pivoted relative to the second flat plate 13 at the connection point of the second connecting portion 13 as an axis, and the other long sides of the two second connecting portions 131 are respectively pivotally connected to the two second flat plates. On the other side of a flat panel 12, each second connecting portion 131 can be pivoted relative to the first flat panel 12 at the junction of each second connecting portion 131 and the first flat panel 12; each handle 14 can be a flexible belt, such as For the rope, the two ends of each handle 14 pass through the corresponding second connecting part 13, and the two ends respectively have a fixing part 141 to fix each carrying handle 14 on the corresponding second connecting part 131 to facilitate the user to carry .

In addition, it can also be shown in Figure 1B, which is the second preferred embodiment of the folding projection screen device with built-in plane speaker of the present invention, wherein the folding board 10 further has a book buckle belt 15 and a fastening portion 16. One end of the book buckle 15 is set on the outer surface of one of the first flat plates 12, and the free end of the book buckle 15 has a buckle 151; the buckle 16 corresponds to the buckle 151 and is set on the other second An outer surface of the flat plate 12 enables the fastening portion 151 to be fastened to the fastening portion 16 .

The projection screen 20 is arranged on the folding plate 10, and the projection screen 20 is flatly attached to the inner surfaces of the two first flat plates 12; in addition, since the projection screen 20 has a certain thickness, as shown in FIG. 2 , its The two first flat panels 12 can protrude when folded, so in order to avoid creases on the projection screen 20, the first connecting portion 11 is preferably designed in a U-shape, that is, the first connecting portion 11 Two side plates 111 are connected to both sides of the two first flat plates 12, so that an accommodating space 112 is formed between the first connecting portion 11 and the two side plates 111, so that when the projection screen 20 is folded in half , which protrude from the two first flat plates 12 and can be accommodated in the accommodating space 112 without creases.

It can be seen from Fig. 2, Fig. 3 and Fig. 4 that the two planar horns 30 are respectively fixed on the inner surfaces of the two second flat plates 13, so the two planar horns 30 can be folded inwardly to the two first flat plates 12 above; wherein the length and width of each plane horn 30 are respectively shorter than the length and width of the first flat plate 12, so when the two first flat plates are folded inwardly, the plane horn 30 can be folded between the two first flat plates. between the first plates 12. Please refer further to Fig. 5, each planar speaker 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 A plurality of sounding holes 33 are formed through the electret sounding layer 32, and the electret sounding layer 32 can emit sound through the sounding holes 33 when receiving a sound source signal; the protective cloth layer 34 covers the entire plane speaker 30 In order to prevent dust from entering the plane horn 30; in addition, please refer to FIG. 6 further, the electret sound-generating layer 32 can be replaced by a vibrating membrane 32', and the vibrating membrane 32' is sandwiched between two frames 31' In the meantime, a vibrating piece 33' is flatly attached to one side of the vibrating membrane 32', and the vibrating piece 33' can vibrate when receiving a sound source signal, and then drive the vibrating membrane 32' to vibrate to make the surrounding air generate sound.

Please refer to shown in Fig. 4, this sound source line 40 has a sound source joint 41 and two electric wires 42; These two electric wires 42 correspond to these two planar speakers 30 respectively and each electric wire 42 one end is electrically connected with corresponding planar speaker 30, and the other One end is commonly electrically connected to the audio connector 41 .

Please refer to Fig. 1A, Fig. 1B and Fig. 2, when the foldable projection screen device with built-in plane speaker of the present invention is not in use, the folding plate 10 is folded inward with the first connecting portion 11 as the folding line, The two first flat panels 12 are folded inward together with the projection screen 20 on its inner surface, and then the two second flat panels 13 are folded inward together with the plane horn 30 on its inner surface, and the two plane horns 30 are folded inward. It is folded between the two first flat panels 12 , so the overall size after being folded can be reduced, and it is easy to store and carry.

Please refer to Fig. 3, Fig. 4, Fig. 7 and shown in Fig. 8, when the user intends to use the foldable projection screen device with built-in plane speaker of the present utility model, then outwardly spread out the first flat plate 12 and the second The flat panel 13 can flatten the projection screen 20 for projection, and by adjusting the angle between the second flat panel 13 and the first flat panel 12, the sounding direction of the two flat speakers 30 can be adjusted, making the built-in flat panel of the present utility model The speaker's folding projection screen device also has the function of sound generation, reducing the use of external speakers.

To sum up, the foldable projection screen device with built-in flat speaker of the present invention does solve the problem that the existing projection screen is not easy to carry and install, and also has a built-in flat speaker 30 for users to play sound, compared with In the past, users needed projectors, computers, speakers, and existing projection screens when they wanted to play video and audio at the same time. Users only need projectors, computers, and the foldable projection screen device with built-in flat speakers of the present invention. To achieve the same effect, the use of external speakers is reduced; in addition, the small size of the flat speaker 30 also enables the foldable projection screen device with built-in flat speakers of the present utility model to further reduce its volume, which is convenient for transportation and storage. the goal of.

The above embodiments are used to illustrate the principles and effects of the present utility model, but the present utility model is not limited to the above embodiments. Those skilled in the art can modify the above-mentioned embodiments within the protection scope of the claims without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the utility model should be covered by the claims of the utility model.

Claims (10)

1. the collapsible projection screen device of a built-in plane horn, is characterized in that, the collapsible projection screen device of described built-in plane horn includes:

One folded sheet, it has the first connecting portion of a strip, two first dull and stereotyped and two the second flat boards; One side of wherein said two the first flat boards is pivotally connected to respectively two relatively long sides of this first connecting portion; And described two the second flat boards are pivotally connected to respectively the opposite side of described two the first flat boards;

One projection screen, it is smooth in described two first dull and stereotyped inside surfaces of this folded sheet;

Two plane horns, it is individually fixed in the inside surface of described two the second flat boards; And

One sound source wire, it comprises a source of sound joint and two electric wires that are electrically connected to this source of sound joint; Wherein said two electric wires are electrically connected to respectively described two plane horns.

2. the collapsible projection screen device of built-in plane horn according to claim 1, it is characterized in that, described each plane horn has two frameworks and an electret sounding layer, this electret sounding layer is folded between described two frameworks, on this electret sounding layer, hole formed therethrough has a plurality of vocal holes, and this electret sounding layer can send the sound by this vocal hole while receiving sound source signal.

3. the collapsible projection screen device of built-in plane horn according to claim 1, is characterized in that, described each plane horn has two frameworks, a vibrating membrane and a vibrating reed; This vibrating membrane is folded between described two frameworks; This vibrating reed is smooth in this vibrating membrane wherein simultaneously, and this vibrating reed can produce vibration when receiving sound source signal.

4. according to the collapsible projection screen device of the described built-in plane horn of any one in claims 1 to 3, it is characterized in that, described the first connecting portion and described two the first dull and stereotyped both sides are connected with two side plates again, make between this first connecting portion and two side plates and form an accommodation space.

5. according to the collapsible projection screen device of the described built-in plane horn of any one in claims 1 to 3, it is characterized in that further pivotally connected one the second connecting portion that is strip between the described second dull and stereotyped and described the first flat board.

6. the collapsible projection screen device of built-in plane horn according to claim 4, is characterized in that, further pivotally connected one the second connecting portion that is strip between the described second dull and stereotyped and described the first flat board.

7. the collapsible projection screen device of built-in plane horn according to claim 5, is characterized in that, further has a carrying handle on described each second connecting portion.

8. the collapsible projection screen device of built-in plane horn according to claim 7, it is characterized in that, described each carrying handle is the pliability band, and the second connecting portion that sets into correspondence is run through at its two ends, and each carrying handle two ends have respectively a fixed part makes each carrying handle be fixed in this second connecting portion.

9. according to the collapsible projection screen device of the described built-in plane horn of any one in claims 1 to 3, it is characterized in that, on described folded sheet, further have book cingulum and an a junction; This book cingulum one end is arranged at the wherein outside surface of one first flat board, and the free end of this book cingulum has a buckle portion; This connecting portion is arranged at the outside surface of another the first flat board and to should buckle portion.

10. according to the collapsible projection screen device of claim 2 or 3 described built-in plane horns, it is characterized in that, described each plane horn further has a protection layer of cloth, and this protection layer of cloth coats whole plane horn.

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