Reflection screen taking-up and paying-off mechanism of head up display

Abstract

The invention relates to the field of design of head up displays, in particular to a reflection screen taking-up and paying-off mechanism of a head up display. The reflection screen taking-up and paying-off mechanism of the head up display comprises a main body framework, a sliding seat and a reflection screen, wherein a first guide rail and a guide rail rack are arranged on the lateral surface of the main body framework, a second guide rail and a lead screw are arranged at the bottom of the main body framework, a lead screw is also provided, and one end of the lead screw is connected with a motor; the lateral surface of the sliding seat is provided with a boss used for being inserted into the first guide rail and a driving gear used for being meshed with the guide rail rack; a through hole sleeved with the second guide rail and a spiral tooth used for being meshed with the lead screw are arranged at the bottom of the sliding seat; the length of the first guide rail and the guide rail rack is smaller than that of the second guide rail and the lead screw; the reflection screen is installed at the top end of the sliding seat. By means of the technical scheme, a novel reflection screen taking-up and paying-off mode is provided, and the reflection screen is taken up and paid off along the rail and is more advanced and technical.

Description

technical field [0001] The invention relates to the field of head-up display design, in particular to a reflective screen retractable mechanism of the head-up display. Background technique [0002] Head Up Display (HUD) is a flight aid instrument commonly used in aircraft at present. It is a comprehensive electronic display device composed of electronic components, display components, controllers, high-voltage power supplies, etc. It can project information such as flight parameters, aiming attack, and self-inspection in the form of images and characters to the optical and electrical display devices on the combined glass directly in front of the cockpit through optical components. When the pilot observes the scene outside the cabin through the combination glass, he can see the characters, images and other information superimposed on the exterior scene at the same time. And the projection focal length is located in the front of the imaging combination glass, so that the pilo...

AI Technical Summary

Problems solved by technology

[0003] The time of the existing head-up display application in the automotive technology field is relatively short. It imitates the main structure of the head-up display on the aircraft, but most of its reflective screens are erected on the inner surface of the windshield of the car. Some heads-up displays can fold the reflective screen when not in use, but this folding method is extremely primitive and outdated

Images