Projection screens and projection equipment
A technology of projection screens and curtains, which is applied in the direction of instruments, projection devices, optics, etc., can solve problems such as machine jamming, and achieve the effect of solving the problem of pinching hands
Active Publication Date: 2021-10-19
SHENZHEN HUOLE TECH DEV CO LTD
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Problems solved by technology
[0003] Embodiments of the present invention provide a projection screen and projection equipment, which can effectively solve the problem of machine jamming caused by foreign objects
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0020] The description of illustrative embodiments in accordance with the principles of the invention is intended to be read in conjunction with the accompanying drawings, which are considered a part of this entire written description. In the description of the disclosed embodiments of the invention, reference to any direction or orientation is for convenience of illustration only and is not intended to limit the scope of th...
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Embodiments of the present invention provide a projection screen and projection equipment. The projection screen includes a base, a rotating shaft, a driving mechanism, a curtain, a fastening piece, a first induction chip and a controller, the base has a mounting groove, the rotating shaft is located in the mounting groove, and the rotating shaft is connected to the base in rotation, and the driving mechanism is used to drive the rotating shaft to rotate, The curtain is at least partially wound around the rotating shaft, the fastener is connected to the side of the curtain away from the base, the first induction chip is at least partially located at the edge of the installation groove, and when the rotation of the rotating shaft drives the fastener to move toward the side close to or away from the base, The first sensing chip is used to sense the distance between the target object and the screen. When the distance between the target object and the screen is less than the preset distance, the first sensing chip sends a prompt signal, and the controller controls the driving mechanism to stop according to the prompt signal. Work. The projection screen of the embodiment of the present invention can solve the problem that the machine is stuck due to the occlusion of foreign objects.
Description
technical field [0001] The invention relates to the technical field of projection equipment, in particular to a projection screen and projection equipment. Background technique [0002] A projection screen is a device that can project images or videos onto a screen. It is widely used in home theaters, office meetings, schools, billboards, and many other places, and there are various types. The projection screen is generally composed of a projection imaging system and an optical amplification system. The projection signal is processed by the imaging technology of the projection screen into an image signal, and then can be projected and displayed on the screen through the amplification of the optical system. The screen dedicated to projection is called projection screen, which is one of the most commonly used products in the peripheral equipment of projection screen. If the projection screen is properly matched with the projection screen, high-quality projection effects can b...
Claims
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IPC IPC(8): G03B21/58G03B21/56
CPCG03B21/56G03B21/58
Inventor 彭振声胡震宇许长征
Owner SHENZHEN HUOLE TECH DEV CO LTD