Projection device for exhibition hall

Abstract

The utility model provides a projection device for an exhibition hall, which comprises a projector main body and a bearing plate, a support is firstly fixed, then the projector main body is placed on the bearing plate, then a first knob is rotated, the first knob drives a first bidirectional threaded rod to rotate, and then the projector main body is placed on the bearing plate. The first sliding plate and the second sliding plate are oppositely arranged at the two ends of the first bidirectional threaded rod, so that the first bidirectional threaded rod and the second bidirectional threaded rod move oppositely or reversely to clamp or loosen the projector body front and back, and then the limiting assembly is started to limit the projector body left and right. The projector main body is fixed on the bearing plate by rotating the fan, and then the driving motor is started to drive the fan to rotate, so that the air flow on the projector main body is accelerated, and the heat of the projector main body is dissipated.

Description

Technical Field

[0001] The utility model relates to the field of projection equipment, in particular to a projection device for exhibition halls. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools and entertainment venues.

[0003] Existing projectors are generally placed directly on the bracket. This method is certainly convenient for taking or placing the projector, but placing the projector directly on the bracket is risky. When the bracket is hit, the projector may fall from the bracket, causing economic losses. At the same time, the projector will generate a lot of heat when working for a long time, and usually the heat can only be dissipated by the projector body itself. After the radiator has been used for a long time, the radiator may age, resulting in poor heat dissipation effect, and it cannot dissipate the heat inside the projector body well, which may cause damage to the projector body.

[0004] Therefore, it is necessary to provide a new exhibition hall projection device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a projection device for exhibition halls.

[0006] The projection device for exhibition hall provided by the utility model comprises: a projector body, a carrying plate and a bracket, the carrying plate being fixedly mounted on the top of the bracket, a first sliding plate and a second sliding plate being movably mounted on both sides of the upper end surface of the carrying plate and being relatively arranged, the projector body being movably mounted between the first sliding plate and the second sliding plate, a first bidirectional threaded rod being inserted in the carrying plate, a first knob for driving the first bidirectional threaded rod to rotate being mounted on one side of the carrying plate, the first sliding plate and the second sliding plate being movably connected with the first bidirectional threaded rod, a plurality of limit assemblies being inserted in the first sliding plate, a fan being inserted between the plurality of limit assemblies, a driving motor for driving the fan to rotate being mounted on a side of the first sliding plate away from the second sliding plate, a plurality of through slots being provided on a side of the first sliding plate adjacent to the second sliding plate, and the airflow generated by the fan dissipates heat from the projector body through the plurality of through slots.

[0007] Preferably, the limiting assembly includes a second bidirectional threaded rod, which is inserted into the first sliding plate, and a second knob for driving the second bidirectional threaded rod is installed on one side of the first sliding plate, and a plurality of relatively arranged splints are movably installed on one side of the first sliding plate adjacent to the second sliding plate, and the plurality of splints are movably connected to the second bidirectional threaded rod.

[0008] Preferably, the bracket includes a lifting component and a supporting component. The lifting component is fixedly installed at the bottom end of the bearing plate, and the supporting component is installed at the bottom end of the lifting component.

[0009] Preferably, the lifting component includes a unidirectional threaded rod and a threaded sleeve. The unidirectional threaded rod is fixedly installed at the bottom of the bearing plate, the threaded sleeve is nested outside the unidirectional threaded rod, and the threaded sleeve is rotatably connected to the supporting component.

[0010] Preferably, the supporting component includes a receiving plate. The receiving plate is rotatably connected to the threaded sleeve. A plurality of supporting feet are inserted through the lower end of the receiving plate. A connecting column is fixedly installed at the bottom end of the receiving plate. A movable ring is nested outside the connecting column. A plurality of connecting rods are inserted between the plurality of supporting feet and the movable ring. The movable ring is movably connected to the connecting column, and a bolt is inserted through the movable ring.

[0011] Preferably, the first bidirectional threaded rod is inserted through one side of the first sliding plate close to the projector body. The fan and the driving motor are installed on the side away from the projector body of the first sliding plate. The distance from the fan to the projector body is less than the distance from the first bidirectional threaded rod to the projector body.

[0012] Compared with the related art, the projection device for exhibition halls provided by the present utility model has the following beneficial effects:

[0013] 1. By placing the projector body on the bearing plate and then rotating the first knob, the first knob drives the first bidirectional threaded rod to rotate. Since the first sliding plate and the second sliding plate are oppositely arranged at both ends of the first bidirectional threaded rod, the first bidirectional threaded rod and the second bidirectional threaded rod move towards each other or move in the opposite direction, so as to clamp or loosen the projector body front and back. Then, the limiting component is started to limit the projector body left and right, so as to fix the projector body on the bearing plate.

[0014] 2. By starting the driving motor, the driving motor drives the fan to rotate, accelerating the gas flow on the projector body, so as to dissipate heat from the projector body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the projection device for exhibition halls provided by the present utility model Figure 1 ;

[0016] Figure 2 is a schematic diagram of the overall structure of the projection device for exhibition halls provided by the present utility model Figure 2 ;

[0017] Figure 3 is a schematic vertical cross-sectional view of the projection device for exhibition halls provided by the present utility model;

[0018] Figure 4Partial structural schematic diagram of the projection device for exhibition hall provided by the present utility model;

[0019] Figure 5 Partial vertical cross-sectional schematic diagram of the projection device for exhibition hall provided by the present utility model.

[0020] Reference numerals in the figure: 1, projector main body; 2, bearing plate; 3, bracket; 4, first sliding plate; 5, second sliding plate; 6, first bidirectional threaded rod; 7, second knob; 8, second bidirectional threaded rod; 9, fan; 10, driving motor; 11, clamping plate; 12, unidirectional threaded rod; 13, threaded sleeve; 14, receiving plate; 15, support foot; 16, connecting column; 17, connecting rod; 18, movable ring; 19, bolt; 20, through groove; 21, first knob. Specific implementation mode

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figures 1-5 , wherein, Figure 1 Overall structural schematic diagram of the projection device for exhibition hall provided by the present utility model Figure 1 ; Figure 2 Overall structural schematic diagram of the projection device for exhibition hall provided by the present utility model Figure 2 ; Figure 3 Vertical cross-sectional schematic diagram of the projection device for exhibition hall provided by the present utility model; Figure 4 Partial structural schematic diagram of the projection device for exhibition hall provided by the present utility model; Figure 5 Partial vertical cross-sectional schematic diagram of the projection device for exhibition hall provided by the present utility model.

[0023] In the specific implementation process, as shown in Figure 1 , 4 and 5, it includes: projector main body 1, and also includes bearing plate 2 and bracket 3. The bearing plate 2 is integrally installed at the top of the bracket 3. On both sides of the upper end surface of the bearing plate 2, relatively arranged first sliding plate 4 and second sliding plate 5 are slidably installed. The projector main body 1 is movably installed between the first sliding plate 4 and the second sliding plate 5. The first bidirectional threaded rod 6 is inserted into the bearing plate 2. A first knob 21 for driving the rotation of the first bidirectional threaded rod 6 is installed on one side of the bearing plate 2. Both the first sliding plate 4 and the second sliding plate 5 are threadedly connected to the first bidirectional threaded rod 6. A plurality of limiting components are inserted into the first sliding plate 4. A fan 9 is inserted between the plurality of limiting components. A driving motor 10 for driving the rotation of the fan 9 is installed on the side of the first sliding plate 4 away from the second sliding plate 5. A plurality of through grooves 20 are opened on the side of the first sliding plate 4 close to the second sliding plate 5. The airflow generated by the fan 9 dissipates heat from the projector main body 1 through the plurality of through grooves 20;

[0024] It should be noted that a chute is provided inside the bearing plate 2, and the first bidirectional threaded rod 6 is inserted into the chute. The bottom ends of the first sliding plate 4 and the second sliding plate 5 are penetrated by the first bidirectional threaded rod 6. When the first knob 21 is rotated, the first bidirectional threaded rod 6 rotates accordingly, thereby driving the first sliding plate 4 and the second sliding plate 5 to move towards or away from each other, so as to achieve the front and back clamping of the projector main body 1. The limiting component plays the effect of clamping the projector main body 1 from left and right. Then, the driving motor 10 is started, and the driving motor 10 drives the fan 9 to rotate. Since through grooves 20 are provided at the adjacent positions of the first sliding plate 4 and the projector main body 1, the fan 9 blows the inside and the surrounding of the projector main body 1, thereby accelerating the air flow speed and accelerating the heat dissipation of the projector main body 1.

[0025] As Figure 4 , 5 shown, the limiting component includes a second bidirectional threaded rod 8. The second bidirectional threaded rod 8 is inserted into the first sliding plate 4, and a second knob 7 for driving the second bidirectional threaded rod 8 is installed on one side of the first sliding plate 4. A plurality of oppositely arranged clamping plates 11 are movably installed on the side of the first sliding plate 4 close to the second sliding plate 5, and the plurality of clamping plates 11 are all threadedly connected to the second bidirectional threaded rod 8;

[0026] After the front and back clamping of the projector main body 1 is completed, the second knob 7 is rotated. The second knob 7 drives the second bidirectional threaded rod 8 to rotate. Since two clamping plates 11 threadedly connected to it are sleeved at both ends of the second bidirectional threaded rod 8, when the second bidirectional threaded rod 8 rotates, the clamping plates 11 move towards or away from each other as the second threaded rod rotates, so as to clamp or loosen the projector main body 1 from left and right.

[0027] As Figure 3 shown, the bracket 3 includes a lifting component and a supporting component. The lifting component is fixedly installed at the bottom end of the bearing plate 2, and the supporting component is installed at the bottom end of the lifting component.

[0028] As Figure 3 shown, the lifting component includes a unidirectional threaded rod 12 and a threaded sleeve 13. The unidirectional threaded rod 12 is fixedly installed at the bottom of the bearing plate 2, the threaded sleeve 13 is nested outside the unidirectional threaded rod 12, and the threaded sleeve 13 is rotatably connected to the supporting component;

[0029] When the height of the projector main body needs to be adjusted, one hand rotates the threaded sleeve 13, and the other hand holds the bearing plate 2 to prevent the unidirectional threaded rod 12 from rotating along with the threaded sleeve 13. Then, since the threaded sleeve 13 and the unidirectional threaded rod 12 are threadedly connected, the rotation of the threaded sleeve 13 is used to control the lifting of the unidirectional threaded rod 12, so as to achieve the adjustment of different heights of the projector main body 1.

[0030] As Figure 3As shown, the support assembly includes a bearing plate 14, the bearing plate 14 is rotatably connected to the threaded sleeve 13, a plurality of support feet 15 are inserted through the lower end of the bearing plate 14, a connecting column 16 is fixedly installed at the bottom end of the bearing plate 14, a movable ring 18 is nested outside the connecting column 16, and a plurality of connecting rods 17 are inserted between the plurality of support feet 15 and the movable ring 18. The movable ring 18 is movably connected to the connecting column 16, and a bolt 19 is inserted through the movable ring 18;

[0031] It should be noted that the support foot 15 is rotatably connected to the bearing plate 14 through a rotating shaft, and the support foot 15 can rotate around the connection point. A movable ring 18 is sleeved outside the connecting column 16, and the movable ring 18 can move freely up and down on the connecting column 16. A threaded groove is provided on the movable ring 18. When the movable ring 18 moves to a suitable position, then the bolt 19 is inserted into the threaded groove, and the friction force between the movable ring 18 and the connecting column 16 is increased by extrusion, so as to prevent the movable ring 18 from sliding. At the same time, since the movable ring 18 is connected to the support foot 15 through the connecting rod 17, and the connecting rod 17 is rotatably connected to the support foot 15, when the movable ring 18 moves up and down, the opening amplitude of the support foot 15 can be controlled under the drive of the connecting rod 17, so as to better help the bracket 3 to be fixed.

[0032] As Figure 5 shown, the first bidirectional threaded rod 6 is inserted through the side of the first sliding plate 4 close to the projector main body 1, and the fan 9 and the drive motor 10 are installed on the side of the first sliding plate 4 away from the projector main body 1. The distance from the fan 9 to the projector main body 1 is less than the distance from the first bidirectional threaded rod 6 to the projector main body 1, so that the fan 9 and the first bidirectional threaded rod 6 will not affect each other's work.

[0033] The working principle provided by the present utility model is as follows: When the projector needs to be used, first fix the bracket 3 well. By adjusting the height of the movable ring 18, control the opening amplitude of the support feet 15 through the connecting rod 17, and then rotate the bolt 19 to fix the movable ring 18. Then hold the bearing plate 2 and rotate the threaded sleeve 13 to make the bearing plate 2 move up and down along the direction of the unidirectional threaded rod 12. After adjustment, place the projector main body 1 on the bearing plate 2, and rotate the first knob 21. The first knob 21 drives the first sliding plate 4 and the second sliding plate 5 to move towards or away from each other through the first bidirectional threaded rod 6, so as to clamp or loosen the projector main body 1 front and back. Then rotate the second knob 7, and the second knob 7 drives the second bidirectional threaded rod 8 to rotate. The clamping plates 11 at both ends of the second bidirectional threaded rod 8 move towards or away from each other accordingly, so as to clamp or loosen the projector main body 1 left and right, thereby fixing the projector main body 1 well. Then start the drive motor 10, and the drive motor 10 drives the fan 9 to rotate. The airflow generated by the fan 9 acts on the inside and around the projector main body 1 through the through groove 20, thereby accelerating the airflow speed inside and around the projector main body 1, and thus assisting the projector main body 1 in heat dissipation.

[0034] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here too much.

[0035] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A projection device for exhibition hall, comprising a projector body (1), characterized in that: The projector also comprises a bearing plate (2) and a bracket (3), wherein the bearing plate (2) is fixedly mounted on the top of the bracket (3), and a first sliding plate (4) and a second sliding plate (5) are movably mounted on both sides of the upper end surface of the bearing plate (2) and are arranged opposite to each other. The projector body (1) is movably mounted between the first sliding plate (4) and the second sliding plate (5), and a first bidirectional threaded rod (6) is inserted into the bearing plate (2). A first knob (21) for driving the first bidirectional threaded rod (6) to rotate is mounted on one side of the bearing plate (2), and the first sliding plate (4) and the second sliding plate (5) are both movably connected to the first bidirectional threaded rod (6); a plurality of limit assemblies are inserted into the first sliding plate (4); a fan (9) is inserted between the plurality of limit assemblies; a driving motor (10) for driving the fan (9) to rotate is installed on the side of the first sliding plate (4) away from the second sliding plate (5); a plurality of through grooves (20) are provided on the side of the first sliding plate (4) adjacent to the second sliding plate (5); and the airflow generated by the fan (9) dissipates heat from the projector body (1) through the plurality of through grooves (20).

2. The projection device for exhibition hall according to claim 1, characterized in that: The limit assembly comprises a second bidirectional threaded rod (8), the second bidirectional threaded rod (8) is inserted into the first sliding plate (4), and a second knob (7) for driving the second bidirectional threaded rod (8) is installed on one side of the first sliding plate (4), and a plurality of relatively arranged clamping plates (11) are movably installed on one side of the first sliding plate (4) adjacent to the second sliding plate (5), and the plurality of clamping plates (11) are all movably connected to the second bidirectional threaded rod (8).

3. The projection device for exhibition hall according to claim 2, characterized in that: The bracket (3) comprises a lifting component and a supporting component, wherein the lifting component is fixedly mounted on the bottom end of the bearing plate (2), and the supporting component is mounted on the bottom end of the lifting component.

4. The projection device for exhibition hall according to claim 3, characterized in that: The lifting assembly comprises a one-way threaded rod (12) and a threaded sleeve (13), wherein the one-way threaded rod (12) is fixedly mounted on the bottom of the bearing plate (2), the threaded sleeve (13) is nested outside the one-way threaded rod (12), and the threaded sleeve (13) is rotatably connected to the supporting assembly.

5. The projection device for exhibition hall according to claim 4, characterized in that: The support assembly comprises a receiving plate (14), wherein the receiving plate (14) is rotatably connected to the threaded sleeve (13), a plurality of supporting legs (15) are inserted through the lower end of the receiving plate (14), a connecting column (16) is fixedly installed at the bottom end of the receiving plate (14), a movable ring (18) is nested outside the connecting column (16), a plurality of connecting rods (17) are inserted between the plurality of supporting legs (15) and the movable ring (18), the movable ring (18) is movably connected to the connecting column (16), and a bolt (19) is inserted through the movable ring (18).

6. The projection device for exhibition hall according to claim 5, characterized in that: The first bidirectional threaded rod (6) is inserted into a side of the first sliding plate (4) close to the projector body (1), and the fan (9) and the drive motor (10) are installed on a side away from the first sliding plate (4) and away from the projector body (1), and the distance from the fan (9) to the projector body (1) is smaller than the distance from the first bidirectional threaded rod (6) to the projector body (1).

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