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Multimedia teaching selection projector

A multimedia and projector technology, applied in the field of multimedia teaching equipment, can solve the problems that cannot be combined with each other, black and white blackboard writing cannot coexist, etc., achieve great teaching application value, meet diversified teaching methods, and ensure the effect of projection effect

Active Publication Date: 2020-08-18
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies of the existing multimedia teaching equipment that cannot coexist with black and white blackboard writing and cannot be used in combination with each other, the present invention provides a multimedia selection and projection instrument that can move the projection screen to any position on the blackboard at will, not only will not block the blackboard blackboard writing, Moreover, it can combine projection information with blackboard information to achieve the best teaching effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: To this end, an example such as figure 1 As shown, by fixing the horizontal support bar 2 through the fixing bracket 1 on the top of the wall with the blackboard side, a screen frame 5 is added outside the projection screen 6, and the upper side of the screen frame 5 is passed through the lower link mechanism 4 Sliding sleeve 3 is installed. It can be seen from the figure that after the sliding sleeve 3 is set on the support rod 2, the entire screen frame, vertical linkage mechanism and sliding sleeve can translate horizontally. This translation feature makes the projection screen have the function of controllable lateral movement.

[0029]Furthermore, in order to realize that the projection screen can also be moved and adjusted vertically, a mechanism is provided to enable the vertical link mechanism 4 to be stretched and positioned. To realize that the vertical link mechanism 4 can be stretched, locked and locked vertically, the preferred method is as des...

Embodiment 2

[0035] Embodiment 2: On the basis of Embodiment 1, the structure that the vertical link mechanism 4 can be stretched and locked vertically and locked can be realized, such as Figure 4 with Figure 5 shown in the manner. Specifically, from Figure 4 It can be seen that the outer sleeve 41 and the inner sleeve 42 are mutually fitted, and the inner end of the inner sleeve 42 is in a semi-closed state, that is, there is an inner stopper 95 and a constraint hole 96, and an inner slider is matched in the inner sleeve 42 94, the inner end of the stay cord 91 is fixed with the inner slider 94, and the outer end of the stay cord is connected with the control end of the operating handle 93. Two or three or four symmetrical shrapnels 97 are respectively fixed to the end of the inner slider 94, and the end of each shrapnel 97 is fixed with a friction block 92, and each shrapnel 97 has a radially outward elastic force so that each The shrapnel 97 is pressed against the inner wall of th...

Embodiment 3

[0037] Embodiment 3: On the basis of Embodiment 1, the steering part base 14 and the movable seat 15 used to control the projector, one side of the two are hinged together through the pin shaft 16, and the other side of the two is respectively hinged with a folding rod , the two folding rods are hinged together through a common pin to form a folding frame 17, one end of the electric push rod 18 is hinged on the pin 16, and the other end is hinged on the common pin, and the electric push rod 18 is controlled by the processor. Telescopic movement, the electric push rod can drive the folding frame 17 to realize unfolding and folding after the telescopic movement, so as to realize the flipping of the movable seat 15 along the pin shaft 16 . A fixed shaft 19 is vertically fixed below the movable seat 15, and a rotating sleeve 20 is installed under the fixed shaft 19. Specifically, a bearing is sleeved in the rotating sleeve 20, and the fixed shaft 19 is installed in the bearing and ...

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Abstract

The invention discloses a multimedia teaching selection projector which comprises a movable projection screen part, a projection capture part, a projection part and the like. The movable projection screen part comprises a supporting rod fixed on a wall above black and white, the supporting rod is sleeved with a sliding sleeve, the sliding sleeve can transversely move on the supporting rod in the axial direction, a screen frame is arranged on the outer side of the projection screen, the screen frame is upwards fixed to the sliding block through a vertical connecting rod mechanism, and transverse movement can be achieved by horizontally pushing and pulling the screen frame; the vertical connecting rod mechanism is provided with a mechanism capable of achieving lifting adjustment and locking,and vertical movement can be achieved by vertically pushing and pulling the screen frame. The projection screen can be moved to any position on the blackboard at will, blackboard writing cannot be shielded, projection information and blackboard writing information can be combined, the optimal teaching effect is achieved, higher teaching application value can be achieved, more use convenience is brought to teachers, and particularly, the teaching field where image-text combination information amount is large and blackboard writing is needed is the field of teaching.

Description

technical field [0001] The invention belongs to the technical field of multimedia teaching equipment, and in particular relates to a multimedia teaching selection and casting instrument suitable for combined use of multiple pictures and texts and blackboard writing. Background technique [0002] During the teaching process, the blackboard is generally fixed in the center of the wall directly in front of the classroom seat. With the popularization of multimedia technology and equipment, the relatively fixed structure of the traditional blackboard brings a lot of inconvenience to multimedia teaching. In multimedia teaching, teachers sometimes still need to use the blackboard to cooperate with the explanation, but in some multimedia classrooms, the projection screen is hung directly in front of the blackboard to cover the blackboard, so that teachers cannot write on the blackboard, and some of them hang a projection screen next to the blackboard , Affecting the normal sight of...

Claims

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Application Information

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IPC IPC(8): G09B5/02G03B21/56B43L1/00
CPCG09B5/02G03B21/56B43L1/00
Inventor 樊晓云
Owner XUCHANG UNIV
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