Sound production plate and projection screen

Abstract

The invention discloses a sound production plate and projection screen, and belongs to the technical field of laser projection. The sound production plate comprises a honeycomb core layer, a first skin and a second skin, wherein the honeycomb core layer is in a rectangular plate shape. As the orthographic projection of the honeycomb core in the honeycomb core layer on the first skin or the secondskin is a hexagonal ring, and the absolute value of the angle difference between the first included angle and the second included angle is greater than or equal to the first preset angle, the arrangement density of the honeycomb core wall in the honeycomb core in the long side x direction of the rectangle is greater than or equal to the second preset angle. Compared with the arrangement density ofthe honeycomb core walls in the short side y direction of the rectangle, the arrangement density of the honeycomb core walls in the honeycomb core is greatly different. Therefore, the difference between the vibration conduction performance of the sound production plate in the x direction and the y direction is large. In a projection screen prepared by the sound production plate subsequently, thesound production plate vibrates under the driving of the exciter to make a sound with a wide frequency response range, so that the sound production effect of the projection screen is improved.

Description

technical field [0001] The present application relates to the technical field of laser projection, in particular to a sounding board and a projection screen. Background technique [0002] The laser projection system includes a projection screen and laser projection equipment. The laser projection equipment can project pictures on the projection screen to realize functions such as video playback. [0003] Currently, it is possible to integrate the sound-generating components of a laser projection system into the projection screen. The projection screen may include: a display functional layer, an acoustic panel and an exciter. Wherein, the display function layer is bonded to the sounding board, and the exciter can be bonded to the side of the sounding board away from the display function layer. The exciter can drive the sounding board to vibrate to produce sound. [0004] Please refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of a sounding...

AI Technical Summary

Problems solved by technology

It can solve the problem that the frequency response range of the sound emitted by the sounding board vibrating under the drive of the exciter is narrow and the sounding effect of the projection screen is poor in the prior art. The technical solution is as follows:

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