Touch control pen

Abstract

The invention relates to a touch control pen, which comprises a pen holder, a pen head, a circuit board, a signal emitting unit and an elastic conductor, wherein the pen head is arranged at one end of the pen holder, the circuit board is arranged in the pen holder and is provided with a circuit layer, the signal emitting unit is arranged in the pen holder and is electrically connected with the circuit board, the elastic conductor is arranged between the pen head and the circuit board and is provided with a plurality of convex points, and the positions of the convex points correspond to the circuit layer. When the pen head pushes the elastic conductor, and any one convex point in the convex points is in contact with the circuit layer, the circuit layer is conducted by the elastic conductor, and the signal emitting unit is driven to emit a signal to a protector.

Description

technical field

[0001] The invention relates to a touch pen, and in particular to a touch pen applied to a projection device. Background technique

[0002] A projection device is a display device for producing large-scale images. The imaging principle of the projection device is to convert the illumination beam generated by the light source into an image beam through a light valve, and then convert the image beam into a projection beam through a lens, and project it onto a screen or a wall. With the advancement of projection technology and the reduction of manufacturing costs, the use of projection devices has gradually expanded from commercial use to home use.

[0003] In order to allow users to write or mark on the screen projected by the projector, an interactive touch pen has been developed. The user can use the interactive stylus to write on the projection surface. When the nib of the stylus is pushed against the switch on the circuit board inside the stylus, the styl...

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