以3d箭头作为路口转向提示标志的导航装置

Navigation device taking 3D arrowhead as intersection turning informatory sign

Abstract

The utility model relates to a navigation device taking a 3D arrowhead as an intersection turning informatory sign, which comprises a CPU unit, a GPS unit, a map database, a path turning data storageunit, a path drawing data storage unit, a turning sign model storage unit (i.e. an arrowhead model database) and a map generating and 3D arrowhead drawing unit. When a turning point shows in a screen,a corresponding 3D arrowhead is obtained from the arrowhead model database and then the 3D arrowhead is moved to an intersection needing display; the size of the 3D arrowhead increasingly becomes larger as the intersection becomes closer; and the direction pointed by the 3D arrowhead is consistent with the turning direction of the intersection.
本实用新型涉及一种以3D箭头作为路口转向提示标志的导航装置,其包括:CPU单元、GPS单元、地图数据库、路径转向数据存储单元、路径描画数据存储单元、转向标志模型存储单元(即箭头模型库)、地图生成及3D箭头描画单元。当转向点在屏幕内时,从箭头模型库中获取相应的3D箭头,然后把该3D箭头移到需要显示的路口处,随着该路口的由远及近,该3D箭头也逐渐由小及大地变化;且在显示时3D箭头所指方向与路口拐弯方向一致。

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