CN213339179U

CN213339179U - Multimedia teaching equipment

Info

Publication number: CN213339179U
Application number: CN202022734562.2U
Authority: CN
Inventors: 李竺蔓
Original assignee: Sichuan Vocational College Of Cultural Industries
Current assignee: Sichuan Vocational College Of Cultural Industries
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-01
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a multimedia teaching equipment, which comprises an outer shell, radiating groove and socket have been seted up respectively to the side of shell, the switch is installed at the top of shell, the bottom fixedly connected with slipmat of shell, the internally mounted of shell has the mainboard, the trompil has been seted up to the side of shell, the outside fixedly connected with sealing ring of trompil, the inboard swing joint of trompil has the lens cone, the knob is installed in the outside of lens cone, the inner wall rotation of lens cone is connected with the plane speculum, radiator fan and bulb are installed respectively to the inner wall of shell, it imparts knowledge to the projecting apparatus to have solved multimedia teaching equipment and has used the projecting apparatus more, nevertheless the height of adjustment screen image under the condition that current projecting apparatus is difficult to unmovable fuselage, and easily get into the lens cone inside because of the dust from the camera lens space, make the dust adhere.

Description

Multimedia teaching equipment

Technical Field

The utility model relates to a teaching equipment technical field specifically is multimedia teaching equipment.

Background

The multimedia teaching is that in the teaching process, according to the characteristics of a teaching target and a teaching object, modern teaching media are reasonably selected and applied through teaching design, and are organically combined with the traditional teaching means to jointly participate in the whole teaching process, and various media information acts on students to form a reasonable teaching process structure so as to achieve the optimized teaching effect.

The multimedia teaching equipment is mainly used for teaching by using a projector, but the height of a screen image is difficult to adjust under the condition that a machine body of the existing projector is not moved, and dust easily enters a lens barrel from a lens gap, so that the dust is attached to a lens assembly, and the projected image is not clear.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a multimedia teaching equipment to the height of adjustment screen image under the condition that is difficult to unmovable fuselage that proposes in solving above-mentioned background art, and easy because of the dust enters into the lens cone from the camera lens space inside, make the dust adhere to on the lens subassembly, lead to the unclear problem of image that throws out.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the multimedia teaching equipment comprises a shell, wherein a heat dissipation groove and a socket are respectively formed in the side surface of the shell, a switch is installed at the top of the shell, an anti-slip pad is fixedly connected to the bottom of the shell, a main board is installed inside the shell, an opening is formed in the side surface of the shell, a sealing ring is fixedly connected to the outer side of the opening, a lens cone is movably connected to the inner side of the opening, a knob is installed on the outer side of the lens cone, a plane reflector is rotatably connected to the inner wall of the lens cone, a heat dissipation fan and a bulb are respectively installed on the inner wall of the shell, a light and shadow box is electrically connected to the side surface of the main board, a condenser and a light filter are respectively and fixedly connected to the inner wall of the light and shadow box, a liquid crystal plate is installed inside the, and the side surface of the auxiliary mirror is fixedly connected with a threaded lens.

Further preferably, the optical filters are arranged in three, the optical filters are arranged in an equal distance, and the optical filters are fixedly connected with the light and shadow box.

Preferably, the threaded lens is formed by overlapping two thin flat organic glass plates engraved with concentric threads, the diameter of the threaded lens is equal to the inner diameter of the lens barrel, and the threaded lens is positioned at the joint of the light and shadow box and the lens barrel.

Further preferably, the liquid crystal panel is provided with three liquid crystal panels, the three liquid crystal panels are respectively arranged in a right angle, and the liquid crystal panels are installed inside the light and shadow box.

Further preferably, the knob is fixedly connected with the plane reflector, the plane reflector can rotate synchronously through the rotation of the knob, and the knob is mounted on the outer side of the lens barrel.

Preferably, the heat dissipation fan is electrically connected with the main board, and the heat dissipation fan is installed on one side of the inner wall of the housing, which is close to the heat dissipation groove.

(III) advantageous effects

The utility model provides a multimedia teaching equipment possesses following beneficial effect:

the multimedia teaching equipment comprises a screw thread lens, an auxiliary mirror, a condenser, a filter, a sealing ring and a knob, wherein when in use, a switch is firstly started, image data of a computer terminal is transmitted to a mainboard by using an interface, a bulb in the machine body is started, emitted light rays firstly pass through the condenser, the condenser is transparent glass with grid patterns, the condenser can carry out parallel processing on multi-angle light rays emitted by the bulb, the light rays are uniformly processed into parallel light rays and then irradiated onto the filter at the back, the light rays are separated into three primary colors of red, green and blue by the filter and are refracted onto a liquid crystal panel by a refractor, then color mixing and synthesis are carried out in a light prism of the liquid crystal panel, formed images are then emitted onto the screw thread lens, the screw thread lens is formed by laminating two thin flat organic glass plates carved with concentric threads, and has the function of being equivalent to a large-caliber convex lens, in order to reduce the surface temperature of the screw thread lens, an auxiliary mirror is arranged between the light source and the screw thread lens, the auxiliary mirror can shield the radiation of the heat energy of the light source to the screw thread lens and can enlarge the containing angle of the screw thread lens and improve the utilization rate of the light source, finally, a plane radiation mirror is arranged at the outermost part of the lens cone, the vertical light axis of the screw thread lens is converted into a horizontal light axis, so that the projected image is converted from vertical inverted placement into horizontal positive placement, thereby obtaining an amplified positive image on the screen, the lens cone can freely move in the opening, the plane radiation mirror can be driven to move left and right in the horizontal direction by the movement of the lens cone, the distance between the plane radiation mirror and the screw thread lens is changed to realize focusing, amplifying or image reducing, and a sealing ring is arranged at the opening to prevent external dust from entering the inner cavity of the lens from a, the brightness is reduced, in addition, a knob arranged outside the lens barrel is connected with the plane radiation mirror, and the elevation angle of the plane reflector can be changed by adjusting the knob, so that the height of the screen image is adjusted under the condition of not moving the camera body.

Drawings

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

fig. 2 is a cross-sectional view of the housing of the present invention;

fig. 3 is a schematic view of a partial structure of the screw lens of the present invention.

In the figure: 1. a housing; 2. a switch; 3. a heat sink; 4. a socket; 5. a non-slip mat; 6. a plane mirror; 7. a knob; 8. a lens barrel; 9. opening a hole; 10. a heat radiation fan; 11. a main board; 12. a bulb; 13. a condenser lens; 14. a light and shadow box; 15. an optical filter; 16. a refractor; 17. a liquid crystal panel; 18. an auxiliary mirror; 19. a threaded lens; 20. and (4) a sealing ring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like 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, and 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 therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: multimedia teaching equipment, including the outer casing 1, the side of outer casing 1 has seted up radiating groove 3 and socket 4 respectively, switch 2 is installed at the top of outer casing 1, the bottom fixedly connected with slipmat 5 of outer casing 1, the internally mounted of outer casing 1 has mainboard 11, the side of outer casing 1 has seted up trompil 9, the outside fixedly connected with sealing ring 20 of trompil 9, the inboard swing joint of trompil 9 has lens cone 8, the outside of lens cone 8 installs knob 7, the inner wall of lens cone 8 rotates and is connected with plane mirror 6, radiator fan 10 and bulb 12 are installed respectively to the inner wall of outer casing 1, the side of mainboard 11 electrically connected with light and shadow case 14, the inner wall of light and shadow case 14 fixedly connected with condensing lens 13 and light filter 15 respectively, the internally mounted of light and shadow case 14 has liquid crystal board 17, the outside fixedly connected with dioptric lens 16 of liquid crystal board 17, a screw lens 19 is fixedly connected to the side of the auxiliary mirror 18.

In this embodiment, specifically, three optical filters 15 are arranged, the three optical filters 15 are arranged at equal intervals, the optical filters 15 are fixedly connected with the light and shadow box 14, light irradiates on the optical filters 15, light is separated into three primary colors of red, green and blue through the optical filters 15, and the light is refracted onto the liquid crystal panel 17 through the refractor 16.

In this embodiment, specifically, the screw lens 19 is formed by laminating two thin flat organic glass plates engraved with concentric threads, the diameter of the screw lens 19 is equal to the inner diameter of the lens barrel 8, the screw lens 19 is located at the joint of the light and shadow box 14 and the lens barrel 8, and the screw lens 19 functions as a light-gathering source in a slide, so that light is gathered and uniformly irradiated onto the plane mirror 6.

In this embodiment, specifically, the liquid crystal panel 17 has three liquid crystal panels 17, the three liquid crystal panels 17 are arranged at right angles, the liquid crystal panel 17 is installed inside the light and shadow box 14, light is separated into three primary colors of red, green, and blue by the optical filter 15 and refracted onto the liquid crystal panel 17 by the refractor 16, then color mixing and synthesis are performed in the light condensing prism in the liquid crystal panel 17, and the formed image is radiated onto the screw lens 19.

In this embodiment, specifically, the knob 7 is fixedly connected to the plane mirror 6, the plane mirror 6 can rotate synchronously by rotating the knob 7, the knob 7 is mounted on the outer side of the lens barrel 8, and the elevation angle of the plane mirror 6 can be changed by adjusting the knob 7, so that the height of the screen image can be adjusted without moving the main body.

In this embodiment, specifically, the heat dissipation fan 10 is electrically connected to the motherboard 11, the heat dissipation fan 10 is installed on one side of the inner wall of the housing 1 close to the heat dissipation groove 3, the light components in the device can dissipate a large amount of heat through the irradiation of light, and the heat dissipation fan 10 can dissipate heat of the light components such as the motherboard 11, the optical filter 15, the auxiliary mirror 18, the screw lens 19, and the like, so as to ensure normal use of the device.

The working principle is as follows: after the utility model is installed, firstly, the installation fixing and safety protection of the utility model are checked, when in use, the switch 2 is started, the interface is utilized to transmit the image data of the computer terminal to the mainboard 11, and the bulb 12 in the machine body is opened, the emitted light firstly passes through the condenser 13, the condenser 13 is a transparent glass with lattice patterns, the multi-angle light emitted by the bulb 12 can be processed in parallel, after being processed into parallel light in a unified way, the light irradiates the light filter 15 at the back, the light is separated into red, green and blue through the light filter 15 and is refracted to the liquid crystal plate 17 through the refractor 16, then the color mixing and synthesis are carried out in the light filter prism in the liquid crystal plate 17, the formed image is then emitted to the screw thread lens 19, the screw thread lens 19 is formed by laminating two thin flat three-primary colors organic glass plates carved with concentric circular threads, the function is equivalent to a large-caliber convex lens, in order to reduce the surface temperature of the screw thread lens 19, an auxiliary lens 18 is arranged between a light source and the screw thread lens 19, the auxiliary lens 18 can shield the radiation of the heat energy of the light source to the screw thread lens 19 and can enlarge the included angle of the screw thread lens 19, the utilization rate of the light source is improved, finally, the outermost part of the lens barrel 8 is a plane radioactive lens, the vertical light axis of the screw thread lens 19 is converted into a horizontal light axis, the projected image is converted into a horizontal positive image from a vertical inverted image, an enlarged positive image is obtained on a screen, the lens barrel 8 can freely move in the opening 9, the plane radioactive lens can be driven to move left and right in the horizontal direction by moving the lens barrel 8, the distance between the plane radioactive lens and the screw thread lens 19 is changed, focusing and image enlargement or image reduction is realized, a sealing ring 20 is arranged at the opening 9, and external dust is prevented from entering the inner, make the lens group receive the pollution, lead to luminance to descend, in addition, the knob 7 that lens cone 8 set up outward is connected with the plane radiation mirror, can take the angle of elevation that changes plane reflection mirror 6 through adjustment knob 7 to adjustment screen image's height under the condition of unmovable fuselage has just so been accomplished right the utility model discloses a use, the utility model discloses simple structure, convenience safe in utilization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Multimedia teaching equipment, including shell (1), its characterized in that: the light shade is characterized in that a heat dissipation groove (3) and a socket (4) are respectively formed in the side face of the shell (1), a switch (2) is installed at the top of the shell (1), an anti-slip pad (5) is fixedly connected to the bottom of the shell (1), a main board (11) is installed inside the shell (1), a hole (9) is formed in the side face of the shell (1), a sealing ring (20) is fixedly connected to the outer side of the hole (9), a lens barrel (8) is movably connected to the inner side of the hole (9), a knob (7) is installed on the outer side of the lens barrel (8), a plane reflector (6) is rotatably connected to the inner wall of the lens barrel (8), a heat dissipation fan (10) and a bulb (12) are respectively installed on the inner wall of the shell (1), a light shade box (14) is electrically connected to the side face of the main board (11), and a collecting mirror (13, a liquid crystal plate (17) is installed inside the light and shadow box (14), a refractor (16) is fixedly connected to the outer side of the liquid crystal plate (17), an auxiliary mirror (18) is fixedly connected to the side face of the liquid crystal plate (17), and a threaded lens (19) is fixedly connected to the side face of the auxiliary mirror (18).

2. Multimedia teaching apparatus according to claim 1, wherein: the optical filter (15) is provided with threely, three the optical filter (15) are the equidistance and arrange, optical filter (15) and shadow case (14) fixed connection.

3. Multimedia teaching apparatus according to claim 1, wherein: the thread lens (19) is formed by overlapping two thin flat organic glass plates carved with concentric threads, the diameter of the thread lens (19) is equal to the inner diameter of the lens barrel (8), and the thread lens (19) is positioned at the joint of the light and shadow box (14) and the lens barrel (8).

4. Multimedia teaching apparatus according to claim 1, wherein: the liquid crystal panel (17) is provided with three liquid crystal panels, the three liquid crystal panels (17) are respectively arranged in a right angle mode, and the liquid crystal panels (17) are installed inside the shadow box (14).

5. Multimedia teaching apparatus according to claim 1, wherein: the rotary knob (7) is fixedly connected with the plane reflector (6), the plane reflector (6) can rotate synchronously through the rotation of the rotary knob (7), and the rotary knob (7) is installed on the outer side of the lens barrel (8).

6. Multimedia teaching apparatus according to claim 1, wherein: the heat dissipation fan (10) is electrically connected with the main board (11), and the heat dissipation fan (10) is installed on one side, close to the heat dissipation groove (3), of the inner wall of the shell (1).