Optical principle layout-based vehicle-mounted HUD (Head Up display)

Abstract

The invention relates to an optical principle layout-based vehicle-mounted HUD (Head Up display). The optical principle layout-based vehicle-mounted HUD includes an image display system which is arranged above a main driver's seat and is adjacent to the edge of the upper end of the inner side of a front windshield, and an angle-adjustable light reflecting system which is arranged before the main driver's seat and is adjacent to the edge of the lower end of the inner side of the front windshield; the image display system is provided with an imaging surface; and the light reflecting system is provided with a light reflecting surface. According to the vehicle-mounted HUD of the invention, the image display system and the light reflecting system are respectively arranged at the edge of the upper end and the edge of the lower end of the front windshield respectively; information on the image display system is transmitted to the light reflecting system based on an optical transmission principle; the information is reflected onto the front windshield, namely, the direction of the sight of a driver, through the light reflecting system; and therefore, the sight of the driver is not shielded at all, the driver can clearly see relevant information such as navigation information and short messages which are imaged on the front windshield, and distraction caused by a situation that the driver checks the navigation information and the like can be avoided, and driving safety can be improved.

Description

technical field [0001] The invention relates to a vehicle-mounted head-up display device, in particular to a vehicle-mounted HUD based on an optical principle layout. Background technique [0002] HUD (HeadUp Display) is the abbreviation of head-up display or head-up display. It is a flight aid instrument commonly used on aircraft. Its main function is to assist the pilot to see the important information he needs without looking down during the mission. This reduces the frequency with which the pilot looks down at the instruments, avoids interruption of attention and loss of control over state awareness, thereby improving the safety of the pilot during flight missions. In recent years, due to the continuous development and growth of the automobile industry, HUD has gradually been popularized and applied in this field, and vehicle-mounted HUD has been derived. , navigation, weather and other information, and display the necessary information on the HUD to help drivers unders...

AI Technical Summary

Problems solved by technology

[0003] However, in the application process of the vehicle-mounted HUD in recent years, a problem has gradually become prominent: that is, although the vehicle-mounted HUD is used to replace the vehicle-mounted audio-visual display system in the prior art, it prevents the driver from shifting his sight to look at navigation and other information while driving. Distraction (generally, the built-in audio-visual display system of the car body is set on the right or left side of the main driver's seat), but the car HUD commonly used in the market is installed above the instrument panel in front of the main driver's seat. During use, Since the vehicle-mounted HUD needs to expand the display screen, it always has a certain impact on the driver's line of sight, especially at the lower position of the line of sight, making it difficult for the driver to notice that the front of the car is short and short during driving, especially when turning Objects or children appear, which may easily lead to partial damage to the car or accidents; due to the above defects, a car HUD with a transparent display screen has been specially developed in the existing market for this defect, and this kind of HUD also has the following defects: First, because the refractive index of the transparent display screen of the vehicle-mounted HUD is different from that of the front windshield, and when an external light source (such as sunlight) passes through the front windshield, a small amount of light is absorbed by the front windshield, and then When passing through the transparent display screen for the second time, it will continue to cause secondary absorption of a small amount of light, which will make the light intensity of the external light source entering the driver's line of sight inconsistent (that is, there is a brightness deviation). Second, although the display screen is transparent, the base part of the car HUD (that is, the installation part with a built-in imaging projection system and installed on the dashboard) cannot always achieve a transparent effect (Due to the complex structure of the base part, the refractive index is also more complicated, which is very easy to cause a refraction effect similar to a prism, which will cause a great safety hazard to the driver), so the base part of the vehicle HUD is also in the driver's seat. Partial occlusion is formed in the line of sight direction, which has certain potential safety hazards; finally, no matter whether the display screen is transparent or not, the structure of the vehicle-mounted HUD in the prior art is integrated, that is, the display screen and the base part are installed integrally. , when one of the components is damaged, either the vehicle-mounted HUD must be disassembled for repair or replacement parts. However, since there are many brands of vehicle-mounted HUDs in the market, there is no modular production effect, so not only disassembly and assembly is time-consuming and laborious, but also often cannot be bought. When it comes to parts that need to be replaced, users often choose to replace them with a new car HUD for the sake of time efficiency, which increases the cost

[0004] To sum up, the defects of the vehicle-mounted HUD in the prior art are obvious. Therefore, how to ensure that the driver's line of sight is not affected and the technical problem of easy viewing of information such as navigation, text messages, phone calls, weather, and news becomes a problem. The main direction of the company's research and development

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