CN108535940A - A kind of projecting apparatus of portable college teaching - Google Patents

Abstract

The invention discloses a kind of projecting apparatus of portable college teaching,Including casing,The upper surface of the casing is equipped with control switch and port,Import on the left of the casing lower surface is equipped with strainer,The right side of the casing is equipped with air outlet,The right side of the casing is fixed with handle,The projecting apparatus of this portable college teaching,It is simple in structure,It is easy to use,In the bottom of casing, the air inlet and strainer of larger area are set,The air outlet of cooperation rear side realizes the without hindrance unimpeded of air-flow,Take away the heat on projecting subassembly and PLC controller,Ensure whole service life,Air inlet and air outlet can be blocked by cover board and shield,Without using in the case of avoid casing internal into ash,Simultaneously support protection is provided for casing,Cover board and supporting leg cooperation are supported casing,Realize the unlatching of air inlet and air outlet,Increase ventilation quantity,Fold reduces whole volume simultaneously,It carries and easy to use.

Description

A portable projector for college teaching

technical field

The invention relates to the technical field of teaching equipment, in particular to a portable projector for college teaching.

Background technique

Multimedia technology is the fastest growing and most active technology in the field of information technology today, and it is the focus of the development and competition of the new generation of electronic technology. Projectors, also known as projectors, are an indispensable part of multimedia teaching. The device that projects images or videos onto the screen can be connected to a computer through different interfaces to play the corresponding video signal. When the projector is working, the heat generated by the lamp panel is very large and the temperature is very high, and high temperature affects multimedia. The most direct killer of the service life of the projector for teaching is that in order to improve the service life of the projector, it is generally equipped with a fan to dissipate heat. In addition, it is necessary to use an air guide component to improve the heat dissipation effect. These components greatly increase the projector The volume makes it inconvenient to carry.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the existing defects and provide a portable projector for college teaching, which has a simple structure and is easy to use, improves the exposed area of the projector components, accelerates heat dissipation, and ensures the normal operation of the equipment. Adjustable and small in size, it can effectively solve the problems in the background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a portable projector for university teaching, including a casing, the upper surface of the casing is provided with a control switch and a port, and the inlet on the left side of the lower surface of the casing There is a filter screen on the top, an air outlet is provided on the right side of the casing, a handle is fixed on the right side of the casing, a projection assembly is installed on the left side of the inner cavity of the casing, and the A support plate is fixed on the right side of the inner cavity, a PLC controller is installed on the upper end of the support plate, a fan is fixed inside the air outlet, and a temperature sensor is installed on the upper side of the inner cavity of the casing corresponding to the PLC controller. The left end of the lower surface of the casing is hinged with a cover plate. Two gear sleeves are sleeved on the fixed shaft in the middle of the lower surface of the casing. The lower side of the gear sleeve is fixed with a leg. A guide rod is fixed, and a slider is sleeved on the guide rod. The lower surface of the slider is provided with convex teeth meshing with the gear sleeve, and the bottom surface of the inner cavity of the casing is provided with a first electric telescopic rod in the horizontal direction. , the telescopic arm at the left end of the first electric telescopic rod is fixedly connected to the slider, the input end of the control switch is electrically connected to the output end of the external power supply, and the output end of the control switch, the port and the temperature sensor are respectively connected to the PLC control The input end of the controller is electrically connected, and the output end of the PLC controller is respectively electrically connected to the input ends of the projection assembly, the blower fan and the first electric telescopic rod.

As a preferred technical solution of the present invention, a strip-shaped hole is provided at the position corresponding to the support leg in the middle of the cover plate, and a shutter is fixed on the upper side of the right end of the cover plate.

As a preferred technical solution of the present invention, the middle part of the support leg passes through the bar-shaped groove, and the two support legs on the upper side of the cover plate are fixedly connected by a connecting rod.

As a preferred technical solution of the present invention, a pressure pad is fixed on the side of the lower end of the support leg, and a pressure groove is provided on the lower surface of the cover plate corresponding to the pressure pad.

As a preferred technical solution of the present invention, the lower surface of the inner cavity of the casing is fixed with a second electric telescopic rod in the vertical direction, and the input end of the second electric telescopic rod is electrically connected to the output end of the PLC controller , the position corresponding to the second electric telescopic rod on the lower side of the telescopic arm is provided with a positioning cap.

Compared with the prior art, the beneficial effects of the present invention are: the portable projector for teaching in colleges and universities has a simple structure and is easy to use, and a large-area air inlet and a filter screen are arranged at the bottom of the casing to match the outlet on the rear side. The air outlet realizes the unimpeded flow of air, takes away the heat on the projection components and the PLC controller, and ensures the overall service life. The air inlet and outlet can be blocked by the cover and the shutter, and the casing can be avoided when not in use. Ash enters inside, and at the same time provides support and protection for the casing. The cover and outriggers cooperate to support the casing, realize the opening of the air inlet and outlet, increase the ventilation volume, and at the same time fold down to reduce the overall volume, easy to carry and use convenient.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of the present invention.

In the figure: 1 casing, 101 filter screen, 102 air outlet, 103 handle, 2 control switch, 3 port, 4 projection component, 5 support plate, 6PLC controller, 7 gear sleeve, 8 cover plate, 801 bar slot, 802 shroud, 9 legs, 901 pressure pad, 902 connecting rod, 10 fan, 11 temperature sensor, 12 first electric telescopic rod, 13 telescopic arm, 14 guide rod, 15 slider, 16 second electric telescopic rod, 17 positioning cap.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-2, the present invention provides a kind of technical scheme: a kind of portable projector for university teaching, comprises casing 1, and the upper surface of casing 1 is provided with control switch 2 and port 3, and casing 1 lower surface The inlet on the left side is provided with a filter screen 101, the right side of the casing 1 is provided with an air outlet 102, the right side of the casing 1 is fixed with a handle 103, and the left side of the inner cavity of the casing 1 is installed with a projection assembly 4, The right side of the inner cavity of the casing 1 is fixed with a support plate 5, the upper end of the support plate 5 is installed with a PLC controller 6, and the inner side of the air outlet 102 is fixed with a fan 10, and the upper side of the inner cavity of the casing 1 corresponds to the position of the PLC controller 6 A temperature sensor 11 is installed, the left end of the lower surface of the casing 1 is hinged with a cover plate 8, two gear sleeves 7 are sleeved on the fixed shaft in the middle of the lower surface of the casing 1, and the lower side of the gear sleeve 7 is fixed with a leg 9, The position corresponding to the support leg 9 in the middle part of the cover plate 8 is provided with a bar-shaped hole 801, the upper side of the right end of the cover plate 8 is fixed with a shutter 802, the middle part of the support leg 9 passes through the bar-shaped groove 801, and the upper side of the cover plate 8 The two legs 9 are fixedly connected by connecting rods 902, the lower end side of the legs 9 is fixed with a pressure pad 901, the lower surface of the cover plate 8 is provided with a pressure groove corresponding to the position of the pressure pad 901, and a guide rod is fixed above the gear sleeve 7 14. A slider 15 is sleeved on the guide rod 14, and the lower surface of the slider 15 is provided with convex teeth meshing with the gear sleeve 7. The bottom surface of the inner cavity of the casing 1 is provided with a first electric telescopic rod 12 in the horizontal direction. The telescopic arm 13 at the left end of the electric telescopic rod 12 is fixedly connected with the slide block 15, the input end of the control switch 2 is electrically connected with the output end of the external power supply, and the output ends of the control switch 2, the port 3 and the temperature sensor 11 are connected with the PLC controller 6 respectively. The input end of the PLC controller 6 is electrically connected with the input end of the projection assembly 4, the blower fan 10 and the first electric telescopic rod 12 respectively, and the inner cavity lower surface of the casing 1 is fixed with a second The electric telescopic rod 16, the input end of the second electric telescopic rod 16 is electrically connected with the output end of the PLC controller 6, and the position corresponding to the second electric telescopic rod 16 on the lower side of the telescopic arm 13 is provided with a positioning cap 17. This portable college teaching The electronic components used in the projector are all existing technologies and will not be innovated here, and will not be repeated here. The PLC controller 6 adopts Siemens 6ES7211-0AA23-0XB0. This portable projector for college teaching has a simple structure , easy to use, a larger air inlet and a filter screen 101 are set at the bottom of the casing 1, and the air outlet 102 on the rear side is used to realize the unimpeded flow of air, and the heat on the projection assembly 4 and PLC controller 6 is taken away, ensuring For the overall service life, the air inlet and outlet 102 can be blocked by the cover plate 8 and the shutter 802, so as to prevent dust from entering the inside of the casing 1 when not in use, and provide support and protection for the casing 1 at the same time. The cover plate 8 Cooperate with the outrigger 9 to support the casing 1, realize the opening of the air inlet and the air outlet 102, increase the ventilation volume, and at the same time fold down to reduce the overall volume, which is convenient to carry and use.

When in use: turn on the control switch 2 to supply power to the PLC controller 6, the PLC controller 6 drives the first electric telescopic rod 12 to drive the slider 15 to move to the left along the guide rod 14, and the outrigger 9 flips counterclockwise downward with the gear sleeve 7 , the second electric telescopic rod 16 works, the end arm is inserted into the positioning cap 17 to lock the deflection angle of the leg 9, the cover plate 8 is cross-supported with the leg 9 under the limit of the connecting rod 902, and the fan 10 works, The outside air enters the casing 1 after being filtered by the filter 101 , carries heat from the projection assembly 4 and the PLC controller 6 , and is discharged from the air outlet 102 .

The invention is simple in structure, easy to use, increases the exposed area of the projector components, accelerates heat dissipation, and ensures normal operation of the equipment. At the same time, the cover plate 8 and the legs 9 are adjustable, which reduces the volume and is convenient for carrying and using in teaching.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (5)

1. a kind of projecting apparatus of portable college teaching, including casing (1), it is characterised in that：The upper surface of the casing (1) (2) and port (3) are switched equipped with control, the import on the left of casing (1) lower surface is equipped with strainer (101), the casing (1) right side is equipped with air outlet (102), and the right side of the casing (1) is fixed with handle (103), the casing (1) it is interior Projecting subassembly (4) is installed on the left of chamber, support plate (5) is fixed on the right side of the inner cavity of the casing (1), the support plate (5) Upper end is equipped with PLC controller (6), and wind turbine (10), casing (1) the inner cavity upside are fixed on the inside of the air outlet (102) Face position corresponding with PLC controller (6) is equipped with temperature sensor (11), and the lower surface left end of the casing (1) is hinged with Cover board (8), socket is there are two geared sleeve (7) in the fixing axle in the middle part of casing (1) lower surface, under the geared sleeve (7) Side is fixed with supporting leg (9), and the geared sleeve (7) is fixedly arranged above guide rod (14), sliding block is socketed on the guide rod (14) (15), sliding block (15) lower surface is equipped with the double wedge engaged with geared sleeve (7), and the inner chamber bottom surface of the casing (1) is equipped with water Square to the first electric telescopic rod (12), the telescopic arm (13) of the first electric telescopic rod (12) left end is solid with sliding block (15) Fixed to be connected, the input terminal of the control switch (2) is electrically connected with the output end of external power supply, the control switch (2), port (3) it is electrically connected respectively with the input terminal of PLC controller (6) with the output end of temperature sensor (11), the PLC controller (6) Output end be electrically connected respectively with the input terminal of projecting subassembly (4), wind turbine (10) and the first electric telescopic rod (12).

2. a kind of projecting apparatus of portable college teaching according to claim 1, it is characterised in that：The cover board (8) Middle part position corresponding with supporting leg (9) is equipped with strip-shaped hole (801), and the right end upper side of the cover board (8) is fixed with shield (802)。

3. a kind of projecting apparatus of portable college teaching according to claim 1, it is characterised in that：The supporting leg (9) Middle part pass through bar-shaped trough (801), and the two supporting legs (9) on the upside of cover board (8) are fixedly linked by connecting rod (902).

4. a kind of projecting apparatus of portable college teaching according to claim 1, it is characterised in that：The supporting leg (9) Lower end side be fixed with pressure pad (901), cover board (8) lower surface position corresponding with pressure pad (901) is equipped with indent.

5. a kind of projecting apparatus of portable college teaching according to claim 1, it is characterised in that：The casing (1) Inner cavity lower surface be fixed with the second electric telescopic rod (16) of vertical direction, the input terminal of second electric telescopic rod (16) It is electrically connected with the output end of PLC controller (6), telescopic arm (13) downside position corresponding with the second electric telescopic rod (16) Positioning cap (17) is installed.