CN106773504A - Portable translucent screen apparatus with thin film loudspeaker - Google Patents

Abstract

The present invention relates to the technical field of projection screens, in particular to a portable projection screen device with a thin-film speaker, comprising a first housing (1) with a "convex" cross-section, a second housing (1) with a "concave" cross-section. The casing (2) and the projection cloth storage assembly; both the first casing (1) and the second casing (2) have two sets of outrigger assemblies, and the outrigger assembly and the first casing (1) and the second casing (2) are slidingly connected, and the outrigger assembly can be accommodated in the first casing (1) and the second casing (2) or the outrigger assembly can protrude from the first casing (1) and the second casing In addition to the two housings (2), positioning mechanisms are provided on the first housing (1) and the second housing (2), and a film horn (9) is fixed inside the second housing (2). After adopting this structure, the device is convenient to carry, thereby satisfying the user's demand for convenient use.

Description

Portable projection screen unit with film horn

technical field

The invention relates to the technical field of projection screens, in particular to a portable projection screen device with a film horn.

Background technique

In the prior art, the projection screen is generally fixed at a fixed position in the classroom or meeting room. When it needs to be used, the projection cloth is put down, and after use, the projection cloth can be curled and stored. However, since this type of projection screen device is fixed and inconvenient to carry, it has the following disadvantages: it is difficult for users to use the projection screen in outdoor meetings or other situations.

Contents of the invention

The technical problem to be solved by the present invention is to provide a portable projection screen device with a thin-film speaker, which is convenient to carry and thus meets the needs of users for easy use.

In order to solve the above-mentioned technical problems, the portable projection screen device with a film horn of the present invention includes a first housing with a "convex" cross-section, a second housing with a "concave" cross-section and a projection cloth. The projection cloth storage assembly that is unfolded or rolled up; one side of the first housing is detachably engaged with one side of the second housing, and after the first housing and the second housing are engaged together, the second housing The cross section of the first housing and the second housing is rectangular; the projection cloth storage assembly includes a first storage reel fixed in the first housing and a second storage reel fixed in the second housing, the first housing The second housing is provided with a through hole for the projection cloth to pass through, the projection cloth is passed through the through hole, and the two ends of the projection cloth are respectively curled on the first storage reel and the second storage reel. Both the first casing and the second casing have two sets of outrigger assemblies, and one end of the first casing and the second casing is provided with a relief opening for the outrigger assembly, and the outrigger assembly and the second The first shell and the second shell are both slidably connected, and the outrigger assembly can be accommodated in the first shell and the second shell or the outrigger assembly can protrude out of the first shell and the second shell for supporting the first shell The body and the second casing, the first casing and the second casing are provided with a positioning mechanism for fixing the position of the leg assembly, and a film horn is fixed in the second casing.

After adopting the above structure, it has the following advantages:

1. Since the cross-section of the first shell is "convex" and the cross-section of the second shell is "concave", when the device is not in use, the outrigger assembly can be accommodated in the first shell and the second shell. After the first housing and the second housing are clamped together, the cross-sections of the first housing and the second housing are rectangular, so that the whole device is in the shape of a cuboid as a whole, takes up little space, and is convenient to carry.

2. When the device is in use, the outrigger assembly can protrude out of the first shell and the second shell to support the first shell and the second shell, and is fixed by the positioning mechanism. The outrigger assembly and the first shell Both are slidably connected with the second shell, so that the user can adjust the height of the support leg assembly supporting the first shell and the second shell, so that the user can adjust the height according to the actual situation to meet the use requirements.

3. A thin-film speaker is fixed inside the second casing, so that the thin-film speaker can be connected to a power amplifier device and play the role of sound.

On the basis of the above technical solution, it may also have the following technical features: the outrigger assembly includes a first outrigger and a second outrigger, the section of the first outrigger is "π" shaped, and the first outrigger the bottom of the leg is hinged to the top of the second leg and the bottom of the first leg clamps the top of the second leg, the first leg has a The accommodating groove for accommodating the second leg is arranged at the rear, the opening direction of the accommodating groove is set along the direction perpendicular to the surface of the projection cloth, and the opening direction of the accommodating groove is set toward the outside of the first casing or the second casing, the The first leg has two sliding grooves, and the two sliding grooves are respectively arranged at both ends of the receiving groove, and are fixed in the corresponding positions of the sliding grooves in the first casing and the second casing There is a slide block, and the chute is slidably connected with the slide block. In this way, the first outrigger with a "π"-shaped cross section not only serves as a sliding connection, but also plays a role in accommodating the second outrigger, so that the outrigger assembly can be integrated into the first housing and the second housing as a whole. . In addition, the bottom of the first leg is hinged to the top of the second leg and the bottom of the first leg clamps the top of the second leg, so that the user can adjust the first leg and the second leg according to actual conditions. The angle between the outriggers, and after adjusting the angle between the first outrigger and the second outrigger, the first outrigger and the second outrigger are relatively fixed, so that the first shell and the second outrigger can be stably supported case.

On the basis of the above technical solution, it may also have the following technical features: the bottom of the first leg and the top of the second leg are hinged, which means that the bottom of the first leg and the top of the second leg There is a perforation at the perforation, and a pin is riveted at the perforation. A rubber gasket is arranged on the pin and between the side walls of the first leg and the second leg. The side wall of the second leg is pressed against. In this way, the first leg and the second leg can be better relatively fixed, so that the first shell and the second shell can be stably supported.

On the basis of the above technical solution, it may also have the following technical features: the positioning mechanism includes a screw, the screw passes through the first housing or the second housing and is threadedly connected with the slider, and the top of the screw is connected with the sliding groove to secure the first leg. In this way, the leg assembly can be fixed conveniently, so that the first shell and the second shell can be stably supported.

On the basis of the above technical solution, it may also have the following technical features: the portable projection screen device with a thin film speaker also includes a cover for closing the relief opening, the cover is connected with the first casing and the second casing Card access. In this way, not only can the relief opening be closed, so that the entire device or the carrying leg assembly does not slip out of the first casing and the second casing during transportation, in addition, the gap between the first casing and the second casing can also be made The clamping connection of the whole device is more firm, so that the first shell and the second shell will not be separated during transportation or handling of the whole device.

Description of drawings

FIG. 1 is a schematic diagram of the structure of the portable projection screen device with a film speaker of the present invention when not in use.

FIG. 2 is a schematic structural view of the portable projection screen device with film horns in use according to the present invention.

FIG. 3 is a structural schematic diagram of another viewing angle of the portable projection screen device with a film speaker in use according to the present invention.

FIG. 4 is a schematic cross-sectional view of the portable projection screen device with a film speaker of the present invention when not in use.

Fig. 5 is a schematic cross-sectional view of the joint of the first leg and the second leg in the portable projection screen device with a film horn according to the present invention.

Figure 6 is a side view of the portable projection screen device with the membrane horn of the present invention in use.

Fig. 7 is a side view of the portable projection screen device with a thin film speaker in one of the usage states of the present invention.

Fig. 8 is a side view of the portable projection screen device with a thin film speaker in one of the usage states of the present invention.

in:

1. The first casing; 2. The second casing; 3. Projection cloth; 4. The first storage reel; 5. The second storage reel; 6. The opening; 7. The first leg; 8. The second Two outriggers; 9, film horn; 10, accommodating groove; 11, chute; 12, slider; 13, perforation; 14, pin shaft; 15, rubber washer; 16, screw; 17, relief opening; 18, Cover.

detailed description

The inventive concepts of the present disclosure are described below using terms commonly used by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of inclusion to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. Components, steps or elements from one embodiment may be assumed to be present or used in another embodiment. Various alternative and/or equivalent implementations may be substituted for the specific embodiments shown and described without departing from the scope of the embodiments of the present disclosure. This application is intended to cover any adaptations or variations of the embodiments discussed herein. It will be apparent to those skilled in the art that alternative embodiments may be practiced using only some of the described aspects. Specific numbers, materials, and configurations are described herein in the embodiments for purposes of illustration, however, one skilled in the art may practice alternative embodiments without these specific details. In other instances, well-known features may be omitted or simplified in order not to obscure the illustrated embodiments.

In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figures 1-5, in one embodiment, a portable projection screen device with a film speaker includes a first housing 1 with a "convex" shape in cross section, a second housing 2 with a "concave" shape in cross section and A projection cloth storage assembly for unfolding or curling the projection cloth 3; one side of the first casing 1 and one side of the second casing 2 are detachably snapped together, specifically, the first casing 1 The protruding part is engaged with the concave part of the second housing 2 , or the first housing 1 and the second housing 2 may be provided with buckles that cooperate with each other, and the specific embodiment is not limited. After the first shell 1 and the second shell 2 are clamped together, the cross sections of the first shell 1 and the second shell 2 are rectangular.

The projection cloth storage assembly includes a first storage reel 4 fixed in the first housing 1 and a second storage reel 5 fixed in the second housing 2, the first housing 1 and the second housing 2 There is a perforation 6 for the projection cloth 3 to pass through, the projection cloth 3 is passed through the perforation 6, and the two ends of the projection cloth 3 are respectively curled on the first storage reel 4 and the second storage reel 5 , the first housing 1 and the second housing 2 both have two sets of outrigger assemblies, one end of the first housing 1 and the second housing 2 is provided with a relief opening for the outrigger assembly 17. The outrigger assembly is slidably connected with both the first housing 1 and the second housing 2, and the outrigger assembly can be accommodated in the first housing 1 and the second housing 2 or the outrigger assembly can extend out of the first housing. The shell 1 and the second shell 2 are used to support the first shell 1 and the second shell 2, the first shell 1 and the second shell 2 are provided with a positioning mechanism for fixing the position of the leg assembly, so A film horn 9 is fixed inside the second casing 2 . The film horn 9 has the advantages of small size and thin thickness. The film horn 9 can be connected to the user's computer with a wireless communication module. The wireless communication module can be bluetooth or the like, which should be understood by those skilled in the art.

On the basis of the above technical solution, it may also have the following technical features: the leg assembly includes a first leg 7 and a second leg 8, the cross section of the first leg 7 is "π" shaped, the The bottom of the first leg 7 is hinged to the top of the second leg 8 and the bottom of the first leg 7 clamps the top of the second leg 8, and the first leg 7 has a The supporting leg 7 and the second supporting leg 8 are folded to accommodate the receiving groove 10 of the second supporting leg 8. The opening direction of the receiving groove 10 is set along the direction perpendicular to the surface of the projection cloth 3, and the opening direction of the receiving groove 10 faces The outside of the first housing 1 or the second housing 2 is set, and the opening direction of the receiving groove 10 is set in this way because after the first leg 7 and the second leg 8 open a certain angle, the bottom end of the second leg 8 A large range of supporting points is formed, which can stably support the first casing 1 and the second casing 2 . The first leg 8 has two sliding grooves 11, and the two sliding grooves 11 are respectively provided at both ends of the receiving groove 10, in the first casing 1 and the second casing 2 and in the A slider 12 is fixed at a corresponding position of the chute 11 , and the chute 11 is slidably connected with the slider 12 . In this way, the first leg 7 with a "π"-shaped cross-section not only plays the role of sliding connection, but also plays the role of accommodating the second leg 8, which facilitates the overall storage of the leg assembly into the first housing 1 and the second in case 2. In addition, the bottom of the first leg 7 is hinged with the top of the second leg 8 and the bottom of the first leg 7 clamps the top of the second leg 8, so that the user can adjust the first leg 8 according to the actual situation. The angle between the leg 7 and the second support leg 8, and after adjusting the angle between the first support leg 7 and the second support leg 8, the first support leg 7 and the second support leg 8 are relatively fixed, so that The first housing 1 and the second housing 2 are stably supported.

Specifically, the user's adjustment method can be:

1. As shown in Figure 6, the angles between the first leg 7 and the second leg 8 in the first shell 1 and the second shell 2 are equal, so that the first shell 1 and the second shell 2 In balance, the projection cloth 3 is in a vertical state.

2. As shown in Figure 7, the angle between the first leg 7 and the second leg 8 on one side of the first housing 1 and the second housing 2 is larger than the angle between the first leg 7 and the second leg 8 on the other side. In this way, the projection cloth 3 is inclined towards the side where the angle between the first leg 7 and the second leg 8 is smaller.

3. As shown in Figure 8, when the angle between the first leg 7 and the second leg 8 is adjusted to a right angle state, the height of the first shell 1 and the second shell 2 can be reduced and the first shell 1 and the second shell 2 can be lowered. The second housing 2 is more firmly supported.

On the basis of the above technical solution, it may also have the following technical features: the bottom of the first leg 7 is hinged to the top of the second leg 8, which means that the bottom of the first leg 7 is connected to the top of the second leg 8 is provided with a perforation 13 at the top position, and a pin 14 is riveted at the perforation 13, and a rubber gasket 15 is arranged on the pin 14 and between the side walls of the first leg 7 and the second leg 8, and the rubber Both ends of the washer 15 are pressed against the side walls of the first leg 7 and the second leg 8 respectively. In this way, it is equivalent to a certain pre-tightening force between the first leg 7 and the second leg 8, and this pre-tightening force can conveniently adjust the angle between the first leg 7 and the second leg 8, and The first leg 7 and the second leg 8 can be relatively fixed when they are relatively opened to a certain angle, so that the first shell 1 and the second shell 2 can be stably supported.

Of course, the hinge connection between the bottom of the first leg 7 and the top of the second leg 8 may also be: the bottom of the first leg 7 and the top of the second leg 8 are connected through a threaded pin and a nut.

On the basis of the above technical solution, it may also have the following technical features: the positioning mechanism includes a screw 16, and the screw 16 passes through the first housing 1 or the second housing 2 and is threadedly connected with the slider 12, and the screw 16 The top of 16 abuts against the bottom surface of chute 11 to fix the first leg 7. In this way, the leg assembly can be fixed conveniently, so that the first housing 1 and the second housing 2 can be stably supported.

On the basis of the above-mentioned technical solution, it may also have the following technical features: the portable projection screen device with a thin-film speaker also includes a cover 18 for closing the abdication opening 17, and the cover 18 is connected with the first housing 1 and The second housing 2 is clamped. In this way, not only can the relief opening 17 be closed, so that the whole device or the carrying leg assembly does not slip out of the first housing 1 and the second housing 2 during transportation, in addition, the first housing 1 and the second housing can also be The clamping connection between the shells 2 is stronger, so that the first shell 1 and the second shell 2 will not be separated during transportation or handling of the whole device.

After adopting the above structure, it has the following advantages:

1. Since the section of the first casing 1 is "convex" and the section of the second casing 2 is "concave", when the device is not in use, the outrigger assembly can be stored in the first casing 1 and the second casing Inside the body 2, after the first housing 1 and the second housing 2 are clipped together, the cross-sections of the first housing 1 and the second housing 2 are rectangular, so that the whole device is in the shape of a cuboid as a whole and takes up little space ,easy to carry.

2. When the device is in use, the outrigger assembly can protrude out of the first shell 1 and the second shell 2 to support the first shell 1 and the second shell 2, and is fixed by a positioning mechanism, and the outrigger assembly and Both the first shell 1 and the second shell 2 are slidingly connected, so that the user can adjust the height of the leg assembly supporting the first shell 1 and the second shell 2, so that the user can adjust the height according to the actual situation to meet the needs of use .

3. A thin-film speaker 9 is fixed inside the second housing 2, so that the thin-film speaker can be connected to a power amplifier and play the role of a sound.

The working principle of the portable projection screen device with the film horn of the above structure:

S1. Take off the cover 18;

S2. Loosen the screw 16 to lower the outrigger assembly from the first housing 1 and the second housing 2, and then tighten the screw 16 to fix the position of the outrigger assembly;

S3. Adjust the angle between the first outrigger 7 and the second outrigger 8 according to the actual situation;

S4. Separate the first casing 1 from the second casing 2, and unroll the projection cloth from the first storage roll 4 and the second storage roll 5 to use.

The above is only a preferred and feasible implementation example of the present invention, and cannot therefore limit the scope of rights of the present invention. All corresponding changes should fall within the protection scope of the claims of the present invention.

Claims (5)

1. The portable projection screen device with film horn is characterized in that, comprises the first shell (1) that cross section is " protruding " font, the cross section is the second shell (2) that is " concave " font and is used for A projection cloth storage assembly that unfolds or curls the projection cloth (3); one side of the first housing (1) is detachably engaged with one side of the second housing (2), and the first housing ( 1) After snapping together with the second housing (2), the cross sections of the first housing (1) and the second housing (2) are rectangular; the projection cloth storage assembly includes The first storage reel (4) in (1) and the second storage reel (5) fixed in the second housing (2), on the first housing (1) and the second housing (2) There is a hole (6) for the projection cloth (3) to pass through, the projection cloth (3) is passed through the hole (6), and the two ends of the projection cloth (3) are respectively curled on the first storage reel (4) and the second storage reel (5), there are two sets of outrigger assemblies in the first housing (1) and the second housing (2), and the first housing (1) and One end of the second casing (2) is provided with a relief opening (17) for the outrigger assembly, and the outrigger assembly is slidably connected with the first casing (1) and the second casing (2), The outrigger assembly can be accommodated in the first casing (1) and the second casing (2) or the outrigger assembly can extend out of the first casing (1) and the second casing (2) for supporting the first The housing (1) and the second housing (2), the first housing (1) and the second housing (2) are provided with a positioning mechanism for fixing the position of the leg assembly, and the second housing (2) ) is fixed with a film horn (9). 2. The portable projection screen device with film horn according to claim 1, characterized in that, the leg assembly comprises a first leg (7) and a second leg (8), and the first leg The section of (7) is "π" type, the bottom of the first support leg (7) is hinged with the top of the second support leg (8) and the bottom of the first support leg (7) connects the second support leg The top of (8) is clamped, and the first leg (7) has a receiving groove for accommodating the second leg (8) when the first leg (7) and the second leg (8) are folded ( 10), the opening direction of the accommodating groove (10) is set along the direction perpendicular to the surface of the projection cloth (3), and the opening direction of the accommodating groove (10) faces the first housing (1) or the second housing ( 2), the first supporting leg (8) has two sliding grooves (11), and the two sliding grooves (11) are respectively arranged at the two ends of the accommodating groove (10). In the first housing (1) and the second housing (2) and at the corresponding position of the chute (11), a slider (12) is fixed, and the chute (11) and the slider (12) Swipe to connect. 3. The portable projection screen device with film horn according to claim 2, characterized in that, the bottom of the first leg (7) is hinged to the top of the second leg (8) and means that the first leg The bottom of one leg (7) and the top position of the second supporting leg (8) are provided with perforation (13), and the perforation (13) place is riveted with pin shaft (14), on described pin shaft (14) and on A rubber washer (15) is arranged between the side walls of the first leg (7) and the second leg (8), and the two ends of the rubber washer (15) are connected to the first leg (7) and the second leg respectively. The side wall of (8) is pressed against. 4. The portable projection screen device with film horn according to claim 2, characterized in that, the positioning mechanism comprises a screw (16), and the screw (16) passes through the first housing (1) or the second housing (1) The casing (2) is threadedly connected with the slide block (12), and the top of the screw (16) is pressed against the bottom surface of the chute (11) to fix the first leg (7). 5. The portable projection screen device with film horn according to claim 1, characterized in that, the portable projection screen device with film horn further comprises a cover (18) for sealing the abdication opening (17) , the cover (18) is engaged with the first casing (1) and the second casing (2).