Interactive projection screen

Abstract

The invention discloses an interactive projection screen, and is applied to the technical field of touch control projection screens. The interactive projection screen comprises a projection screen assembly, a touch control suit, a first U-shaped groove and a rotating shaft arranged inside the first U-shaped groove, wherein the projection screen assembly comprises projection screen cloth and a hanger rod; the touch control assembly comprises an electromagnetic induction layer and an electronic control assembly; only one rotating shaft is arranged, and the touch control assembly correspondinglyfurther comprises a motor for driving the rotating shaft to rotate; and elastic flexible layers capable of being rolled repeatedly are arranged on the front face and the rear face of the electromagnetic induction layer respectively. According to the interactive projection screen, the structural style of a double-layer single shaft single motor is adopted, compared with the structure technique of existing double-layer double-shaft double motors, impressions appearing on the projection screen during rolling still can be solved, on the basis of a roughness problem, the weight and cost of the product can also be reduced simultaneously, a series of problems caused by the double-layer double-shaft double motors are avoided, and then the competitive power and application prospect of the product in the market are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of touch projection screens, and in particular relates to an interactive projection screen. Background technique [0002] Electromagnetic touch projection screen is an interactive electronic display device other than electronic whiteboard and interactive LCD panel. It is mainly used in education, training, conferences and other occasions to realize display and interactive functions. In the field of general education, the application of touch screens can reduce the damage to students' eyesight caused by existing electronic whiteboards and interactive LCD panels, which is not only of economic significance, but also of social significance. The electromagnetic touch screen fills the gap in large-scale occasions such as universities and conferences that lack large-size and super-large-size full-screen interactive electronic display devices. Realizing the interactive function of electromagnetic induction on the p...

AI Technical Summary

Problems solved by technology

[0008] Although the double-layer double-axis double-motor structure technology solves the problem of projection screen flatness, it adds an additional rotating shaft and a motor to the existing double-layer single-axis single-motor technology, which not only increases the cost of the rotating shaft and motor , also increases the cost of the motor control circuit, and also increases the weight and volume of the product

Moreover, the double-layer dual-axis dual-motor has more complicated problems than the single-axis single-motor solution, that is, the probability of failure of the motor and the circuit is higher

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