CN110928116A

CN110928116A - Multimedia projection system

Info

Publication number: CN110928116A
Application number: CN201911347101.5A
Authority: CN
Inventors: 邓练兵; 吴浩清; 张文浩
Original assignee: Zhuhai Dahengqin Technology Development Co Ltd
Current assignee: Zhuhai Dahengqin Technology Development Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-03-27
Anticipated expiration: 2039-12-24
Also published as: CN110928116B

Abstract

The invention relates to the technical field of projectors, in particular to a multimedia projection system. The method comprises the following steps: a projector; the accommodating box is provided with an opening towards one side of the ground; the baffle is used for bearing the projector and can move along the vertical direction; one end of the shear fork lifting frame is assembled with the accommodating box, the other end of the shear fork lifting frame is assembled with the baffle plate, and the shear fork lifting frame comprises a plurality of connecting rods; and the drive assembly is arranged in the containing box and used for driving the scissors lifting frame to unfold or fold along the vertical direction, and the drive assembly comprises: the winding reel is arranged in the accommodating box; the reversing wheels are arranged at two ends of the connecting rod; one end of the winding rope is fixed on the baffle, and the other end of the winding rope is fixed on the winding reel backwards along the reversing rotation and is wound by the winding reel; and the driving piece is assembled with the winding reel and is used for driving the winding reel to rotate so as to wind and unwind the winding rope. When the projecting apparatus does not use, can accomodate the projecting apparatus to can reduce the dust on the projecting apparatus and pile up, prolong the life of projecting apparatus.

Description

Multimedia projection system

Technical Field

The invention relates to the technical field of projectors, in particular to a multimedia projection system.

Background

A projector, also called a projector, is a device capable of projecting images or videos onto a curtain, and may be connected to a computer, a VCD, a DVD, a BD, a game machine, a DV, etc. through different interfaces to play corresponding video signals, which is commonly used in teaching and meeting scenes, but the existing projectors are usually fixedly suspended on a ceiling without protection measures, so that dust is easily accumulated on the projectors, and the service life of the projectors is affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect that the projector is easy to accumulate dust and affect the service life of the projector due to the fixed arrangement of the projector in the prior art, thereby providing a multimedia projection system.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a multimedia projection system comprising:

a projector;

the screen assembly is used for the projector to project the screen signal;

the accommodating box is arranged on the building ceiling, and an opening is formed in one side of the accommodating box facing the ground;

the baffle is used for bearing the projector, and the baffle can move along the vertical direction to movably shield the opening of the accommodating box;

the two scissor lifting frames are arranged, one end of each scissor lifting frame is assembled with the containing box, the other end of each scissor lifting frame is assembled with the baffle, the two scissor lifting frames are distributed on two opposite sides of the containing box, and each scissor lifting frame comprises a plurality of connecting rods which are arranged in a scissor manner;

and the drive assembly is arranged in the containing box and used for driving the scissor lifting frame to be unfolded or furled along the vertical direction, and the drive assembly comprises: the winding reel is arranged in the accommodating box, and the extension direction of the winding reel is vertical to the connecting line of the two scissor lifting frames; the reversing wheels are arranged at two ends of the connecting rod; one end of the winding rope is fixed on the baffle, the other end of the winding rope is fixed on the winding reel backwards along the reversing rotation, and the winding rope is wound by the winding reel; and the driving piece is assembled with the winding reel shaft and used for driving the winding reel shaft to rotate so as to wind and unwind the winding rope.

Further, the driving member includes:

a driven gear mounted on the winding reel;

a driving gear engaged with the driven gear;

and the driving source is assembled with the driving gear so as to drive the driving gear to rotate.

Further, the driving source is a motor or a cylinder.

Furthermore, the multimedia projection system further comprises a heat dissipation structure, wherein one end of the heat dissipation structure is assembled with the projector, and the other end of the heat dissipation structure is assembled with the baffle plate, so that a certain distance is formed between the projector and the baffle plate to enable the projector to dissipate heat.

Further, the projection area of the projector on the baffle is smaller than the area of the baffle, and the heat dissipation structure includes:

an annular heat sink disposed along a circumferential direction of the baffle;

and one end of the central radiating fin is arranged at the central position of the baffle, and the other end of the central radiating fin is arranged on the annular radiating fin.

Furthermore, the central radiating fins are spirally distributed in the annular radiating fins.

Furthermore, the annular cooling fins and the central cooling fins extend towards one side of the baffle to protrude out of the baffle.

Furthermore, the curtain assembly comprises a projection curtain and a power source, the power source is assembled with the projection curtain and is used for controlling the projection curtain to lift; the power source and the driving assembly both comprise a forward rotation unit and a reverse rotation unit, when the forward rotation unit is opened, the projection curtain and the baffle descend, when the reverse rotation unit is opened, the projection curtain and the baffle ascend,

the multimedia projection system further comprises:

a sound wave generator which is connected with a circuit of the projector and is used for emitting a first sound wave at the moment when the projector is started and emitting a second sound wave at the moment when the projector is closed;

an acoustic receiver for receiving acoustic waves;

and the controller is communicated with the sound wave receiver, the power source and the driving assembly, when the sound wave receiver receives a first sound wave, the controller controls the forward rotation unit of the power source and the driving assembly to be started, and when the sound wave receiver receives a second sound wave, the controller controls the reverse rotation unit of the power source and the driving assembly to be started.

The technical scheme of the invention has the following advantages:

1. according to the multimedia projection system provided by the invention, the accommodating box with an opening at one side, the baffle, the scissor lifting frame and the driving assembly are arranged, when a projector is not needed to be used, the scissor lifting frame can be driven by the driving assembly to be folded, so that the baffle drives the projector to move towards one side of the accommodating box, and the projector is further accommodated in a space enclosed by the baffle and the accommodating box in a matched manner.

2. According to the multimedia projection system provided by the invention, the heat dissipation structure is arranged between the projector and the baffle plate, and the heat dissipation structure enables a certain distance to be formed between the projector and the baffle plate, so that the situation that the projector cannot dissipate heat due to the fact that the baffle plate blocks the heat dissipation port of the projector is avoided, the heat dissipation of the projector is facilitated, and the service life of the projector can be further prolonged.

3. According to the multimedia projection system provided by the invention, the heat dissipation structure is arranged to comprise the annular heat dissipation fins and the central heat dissipation fins, one end of each central heat dissipation fin is arranged at the central position of the baffle, and the other end of each central heat dissipation fin is arranged on the annular heat dissipation fins, so that the heat of the projector can be dissipated in a net shape along the annular heat dissipation fins and the central heat dissipation fins, the heat dissipation of the projector is further promoted, and the service life of the projector is further prolonged.

4. According to the multimedia projection system provided by the invention, the central radiating fins are spirally distributed in the annular radiating fins, compared with the straight radiating fins which are radially distributed, the arch radiating fins which are spirally distributed can effectively increase the length of the central radiating fins, so that the radiating effect of the projector is further improved.

5. According to the multimedia projection system provided by the invention, the annular radiating fin and the central radiating fin are respectively provided with the plurality of radiating holes, so that the convection of wind can be formed between the annular radiating fin and the central radiating fin, and the radiating effect of the projector is further improved.

6. According to the multimedia projection system provided by the invention, the sound wave generator, the sound wave receiver and the controller are arranged, so that the projection curtain and the baffle can automatically descend when the projector is started, and the projection curtain and the baffle can automatically ascend when the projector is closed, thereby being convenient for controlling the whole multimedia projection system.

Drawings

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

Fig. 1 is a schematic structural diagram of a multimedia projection system according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a heat dissipation structure in embodiment 1 of the present invention;

fig. 3 is a block diagram of a multimedia projection system according to embodiment 1 of the present invention;

description of reference numerals:

1. a projector; 11. an acoustic wave generator; 2. a curtain assembly; 3. a containing box; 4. a baffle plate; 5. a scissor lifting frame; 51. a connecting rod; 6. a drive assembly; 61. a winding reel; 62. a reversing wheel; 63. winding the rope; 64. a drive member; 7. a heat dissipation structure; 71. an annular heat sink; 711. heat dissipation holes; 72. a central heat sink; 8. a controller; 9. an acoustic receiver.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

With reference to fig. 1-3, the present embodiment relates to a multimedia projection system, which includes a projector 1, a curtain assembly 2, a receiving box 3, a baffle 4, a scissor lift 5, and a driving assembly 6.

The screen assembly 2 is arranged on a wall body and used for the projector 1 to project screen signals, the containing box 3 is arranged on a building ceiling, an opening is formed in one side, facing the ground, of the containing box 3, the baffle 4 is used for bearing the projector 1, and the baffle 4 can move in the vertical direction to movably shield the opening of the containing box 3; one end of the scissor lifting frame 5 is assembled with the accommodating box 3, the other end of the scissor lifting frame 5 is assembled with the baffle 4, two scissor lifting frames 5 are arranged and distributed on two opposite sides of the accommodating box 3, and the scissor lifting frame 5 comprises a plurality of connecting rods 51 which are arranged in a scissor manner; the driving assembly 6 is arranged in the accommodating box 3 and used for driving the scissor lifting frame 5 to be unfolded or folded along the vertical direction.

Specifically, the drive assembly 6 includes a winding reel 61, a reverse pulley 62, a winding cord 63, and the reverse pulley 62. The winding reel 61 is arranged in the accommodating box 3, and the extension direction of the winding reel 61 is vertical to the connecting line of the two scissor lifting frames 5; a plurality of reversing wheels 62 are arranged, and the reversing wheels 62 are arranged at two ends of the connecting rod 51; one end of a winding rope 63 is fixed on the baffle 4, and the other end of the winding rope is fixed on the winding reel 61 after being reversed along the reversing wheel 62 and is wound by the winding reel 61; the driving member 64 is assembled with the winding reel 61, and the driving member 64 is used for driving the winding reel 61 to rotate so as to wind and unwind the winding rope 63.

The multimedia projection system for realizing the technical scheme can utilize the driving component 6 to drive the winding reel 61 to pay out the winding rope 63 when the projector 1 needs to be used, the scissor lifting frame 5 is gradually unfolded under the action of the gravity of the baffle 4 and the projector 1 so as to convey the baffle 4 and the projector 1 to a preset position, then the projector 1 and the curtain component 2 are opened for use, when the projector 1 does not need to be used, the driving component 6 is utilized to drive the winding reel 61 to reversely and gradually take up the winding rope 63, so that the scissor lifting frame 5 is gradually folded, the baffle 4 drives the projector 1 to move towards one side of the accommodating box 3, finally the baffle 4 shields an opening of the accommodating box 3, the projector 1 is accommodated in a space formed by the accommodating box 3 and the baffle 4, when the projector 1 is not used, the projector 1 can be accommodated, so that the projector 1 cannot be always exposed in the air, further, dust accumulation on the projector 1 can be reduced, and the life of the projector 1 can be prolonged.

Specifically, in the present embodiment, the driving member 64 includes a driven gear, a driving gear, and a driving source. The driven gear is mounted on the winding reel 61; the driving gear is meshed with the driven gear; the driving source is assembled with the driving gear to drive the driving gear to rotate. Simple structure and easy realization. In the present embodiment, the driving source is a motor, and in other embodiments, the driving source may be provided as a cylinder.

Because the projector 1 is abutted against the baffle 4, which may cause the poor heat dissipation effect of the projector 1, it is preferable that, in this embodiment, a heat dissipation structure 7 is further disposed in the multimedia projection system, one end of the heat dissipation structure 7 is assembled with the projector 1, the other end is assembled with the baffle 4, and the heat dissipation structure 7 is used for forming a certain distance between the projector 1 and the baffle 4.

Realize above-mentioned technical scheme's multimedia projection system, through set up heat radiation structure 7 between projecting apparatus 1 and baffle 4, heat radiation structure 7 makes to be formed with the certain distance between projecting apparatus 1 and the baffle 4 to avoided baffle 4 to block up 1 thermovent of projecting apparatus and lead to the unable radiating condition of projecting apparatus 1 to take place, be favorable to the heat dissipation of projecting apparatus 1, thereby can further prolong the life of projecting apparatus 1.

Preferably, in the present embodiment, the projection area of the projector 1 on the baffle 4 is smaller than the area of the baffle 4, and the heat dissipation structure 7 includes an annular heat dissipation fin 71 and a central heat dissipation fin 72. Wherein, the annular cooling fins 71 are arranged along the circumferential direction of the baffle 4; the central radiating fins 72 are provided in plural, and one end of the central radiating fin 72 is provided at the central position of the baffle 4, and the other end is provided on the annular radiating fin 71.

In the multimedia projection system for implementing the above technical solution, the heat dissipation structure 7 is configured to include the annular heat dissipation fin 71 and the central heat dissipation fin 72, one end of the central heat dissipation fin 72 is disposed at the central position of the baffle 4, and the other end of the central heat dissipation fin is disposed on the annular heat dissipation fin 71, so that the heat of the projector 1 can be dissipated in a net shape along the annular heat dissipation fin 71 and the central heat dissipation fin 72, thereby further promoting the heat dissipation of the projector 1 and further improving the service life of the projector 1.

Preferably, in the present embodiment, the central fins 72 are spirally distributed within the annular fins 71. I.e., the central fin 72 is arcuately disposed.

In the multimedia projection system for realizing the technical scheme, the central radiating fins 72 are spirally distributed in the annular radiating fins 71, so that the length of the central radiating fins 72 can be effectively prolonged, and the radiating capacity of the multimedia projection system is further improved. In other embodiments, the central fins 72 may be arranged as straight fins, and the central fins 72 are radially distributed in the annular fins 71.

In order to further improve the heat dissipation capability of the projector 1, in the present embodiment, the annular fin 71 and the central fin 72 are extended toward the baffle 4 side so as to project from the baffle 4, thereby further extending the heat dissipation path of the projector 1. More preferably, the annular heat sink 71 and the central heat sink 72 are both provided with a plurality of heat dissipating holes 711. This is so arranged that the wind can form convection between the annular fins 71 and the central fins 72, thereby further improving the efficiency of heat dissipation.

Specifically, in the present embodiment, the curtain assembly 2 includes a projection curtain, and a power source, which is assembled with the projection curtain and is used for controlling the lifting of the projection curtain; the power source and driving assembly 6 comprises a forward rotation unit and a reverse rotation unit, when the forward rotation unit is opened, the projection curtain and the baffle 4 descend, when the reverse rotation unit is opened, the projection curtain and the baffle 4 ascend, and the multimedia projection system further comprises a sound wave generator 11, a sound wave receiver 9 and a controller 8.

The sound wave generator 11 is connected with a circuit of the projector 1, and is used for emitting a first sound wave at the moment when the projector 1 is started and emitting a second sound wave at the moment when the projector 1 is closed; the sound wave receiver 9 is used for receiving sound waves; the controller 8 is connected with the sound wave receiver 9, the power source and the driving assembly 6, when the sound wave receiver 9 receives a first sound wave, the controller 8 controls the forward rotation unit of the power source and the driving assembly 6 to start, and when the sound wave receiver 9 receives a second sound wave, the controller 8 controls the reverse rotation unit of the power source and the driving assembly 6 to start.

Realize above-mentioned technical scheme's multimedia projection system through setting up acoustic generator 11, acoustic receiver 9 and controller 8 to the realization is when projecting apparatus 1 opens, and projection curtain and baffle 4 can descend automatically, and when projecting apparatus 1 closed, projection curtain and baffle 4 can rise automatically, thereby conveniently control whole multimedia projection system.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A multimedia projection system, comprising:

a projector (1);

the screen assembly (2) is used for the projector (1) to project screen signals;

the accommodating box (3) is arranged on the building ceiling, and an opening is formed in one side, facing the ground, of the accommodating box;

the baffle (4) is used for bearing the projector (1), and the baffle (4) can move along the vertical direction to movably shield the opening of the accommodating box (3);

the scissors fork lifting frame (5) is provided with two scissors fork lifting frames (5), one end of each scissors fork lifting frame is assembled with the containing box (3), the other end of each scissors fork lifting frame is assembled with the baffle (4), and the scissors fork lifting frames are distributed on two opposite sides of the containing box (3), and each scissors fork lifting frame (5) comprises a plurality of connecting rods (51) which are arranged in a scissors fork shape;

and the driving assembly (6) is installed in the accommodating box (3) and used for driving the scissors lifting frame (5) to be unfolded or folded along the vertical direction, and the driving assembly (6) comprises: the winding reel (61) is arranged in the accommodating box (3), and the extension direction of the winding reel (61) is vertical to the connecting line of the two shearing fork lifting frames (5); a reverse wheel (62) mounted on an end of the link (51); one end of the winding rope (63) is fixed on the baffle (4), and the other end of the winding rope is fixed on the winding reel (61) after being reversed along the reversing wheel (62), and is wound by the winding reel (61); and the driving piece (64) is assembled with the winding reel (61) and used for driving the winding reel (61) to rotate so as to wind and release the winding rope (63).

2. The multimedia projection system of claim 1, wherein the drive member (64) comprises:

a driven gear mounted on the winding reel (61);

a driving gear engaged with the driven gear;

3. The multimedia projection system of claim 2, wherein the driving source is a motor or a cylinder.

4. A multimedia projection system according to claim 3, further comprising a heat sink structure (7), wherein the heat sink structure (7) is mounted to the projector (1) at one end and to the baffle (4) at the other end for providing a distance between the projector (1) and the baffle (4).

5. The multimedia projection system according to claim 4, wherein the projection area of the projector (1) on the baffle (4) is smaller than the area of the baffle (4), and the heat dissipation structure (7) comprises:

an annular fin (71) provided along a circumferential direction of the baffle plate (4);

and the central radiating fins (72) are arranged, one end of each central radiating fin (72) is arranged at the central position of the baffle (4), and the other end of each central radiating fin is arranged on the annular radiating fin (71).

6. The multimedia projection system of claim 5, wherein the central heat sink (72) is spirally distributed within the annular heat sink (71).

7. The multimedia projection system of claim 6, wherein the annular fin (71) and the central fin (72) extend toward a side of the baffle (4) to be disposed to protrude from the baffle (4).

8. The multimedia projection system of claim 7, wherein the annular heat sink (71) and the central heat sink (72) each have a plurality of heat dissipation holes (711).

9. The multimedia projection system of claim 1, wherein the curtain assembly (2) comprises a projection curtain and a power source mounted to the projection curtain for controlling the elevation of the projection curtain; the power source and the driving component (6) both comprise a forward rotation unit and a reverse rotation unit, when the forward rotation unit is opened, the projection curtain and the baffle (4) descend, when the reverse rotation unit is opened, the projection curtain and the baffle (4) ascend,

the multimedia projection system further comprises:

a sound wave generator (11) that is electrically connected to the projector (1) and emits a first sound wave at a moment when the projector (1) is turned on and emits a second sound wave at a moment when the projector (1) is turned off;

a sound wave receiver (9) for receiving sound waves;

and the controller (8) is connected with the sound wave receiver (9), the power source and the driving assembly (6), when the sound wave receiver (9) receives a first sound wave, the controller (8) controls the forward rotation unit of the power source and the driving assembly (6) to be started, and when the sound wave receiver (9) receives a second sound wave, the controller (8) controls the reverse rotation unit of the power source and the driving assembly (6) to be started.