公开(公告)号：US4972122A

公开(公告)日：1990-11-20

申请号：US350194

申请日：1989-05-11

申请人： Shigetoshi Daidouji ,  Masafumi Nagami

发明人： Shigetoshi Daidouji ,  Masafumi Nagami

IPC分类号： G09G3/12 ,  G02B27/00 ,  G02B27/01 ,  G09G3/16 ,  H05B41/232 ,  H05B41/392

CPC分类号： H05B41/14 ,  G02B27/01 ,  G09G3/16 ,  G02B2027/012 ,  G02B2027/014

摘要： In a head-up display apparatus for a vehicle, there are employed, a fluorescent display tube having a filament, a grid, and an anode positioned in a predetermined positional relationship; a power supply circuit for supplying a filament current to the filament of the tube and an anode voltage to the anode thereof; a display controller coupled to a display switch, for controlling the display tube so as to display various information of a vehicle on the display tube in response to a vehicle information signal and a switch signal of the display switch, the display switch being operated so as to display/erase the various information on/from the tube; and, a synchronized switching unit for controlling the supply of the filament current to the filament from the power supply circuit in synchronism with the switching signal of the display switch supplied from the display controller. As a result, when the display switch is turned off, a heated filament image of the filament no longer appears on a windowshield of the vehicle.

摘要翻译： 在车辆的平视显示装置中，采用具有以预定位置关系定位的灯丝，栅格和阳极的荧光显示管; 电源电路，用于向灯丝提供灯丝电流，并向其阳极提供阳极电压; 耦合到显示开关的显示控制器，用于响应于车辆信息信号和显示开关的切换信号来控制显示管以便在显示管上显示车辆的各种信息，显示开关被操作为 在管上显示/擦除各种信息; 以及同步切换单元，用于与从显示控制器提供的显示开关的切换信号同步地控制从电源电路向灯丝供电的灯丝电流。 结果，当显示开关关闭时，灯丝的加热灯丝图像不再出现在车辆的窗户窗上。