Head-up display with magnetic field speed detecting means
First Claim
1. A vehicle head-up display for correctly displaying instant information values at an area visible to the driver in the central portion on the windshield of a vehicle, said display comprising:
- an electromagnetic inducer for detecting the changes of magnetic field generated by a plurality of magnetic force generators so as to sense an electromagnetic signal;
the magnetic force generators secured on the wheel transmission shaft of the wheels for measuring the speed of the vehicle in conjunction with the sensing by the electromagnetic inducer;
a counting circuit device comprising microprocessor IC and an interface circuit, which receives the electromagnetic signal via a signal line so as to calculate the speed of the vehicle;
a projection display comprising a transmissive lens of a particular magnification, a fluorescent display lamp, a colored film having a transmissivity of only 70%, a dark colored transparent shield, a housing, a base, and an angle adjustment knob wherein the horizontal image displayed on the fluorescent display lamp is double-refracted by said transmissive lens and projected onto the windshield through said colored film and then reflected to form into the correct image;
a function control box connecting to said projection display via a control function line for transferring the control signal to said counting circuit device, said function control box having a control panel with touch control keys for setting the contents of the informations to be displayed; and
a light colored transparent displaying film having coated with hydrogel for displaying the image while preventing double images and the interference by the light rays coming from outside the vehicle.
1 Assignment
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Accused Products
Abstract
A head-up display (HUD) for automobile or motorcycle use. By using a vacuum fluorscent display and through the double refraction effected by a special lens, the desired instant information values such the speed, time, etc. are enlarged and projected and then accurately displayed on the windshield of an automobile or on the safety helmet worn by a motorcycle rider for fast direct readout. The present invention further comprises an electromagnetic inducer disposed on the tire which correctly calculates the speed of the vehicle regardless of the tire size.
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Citations
9 Claims
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1. A vehicle head-up display for correctly displaying instant information values at an area visible to the driver in the central portion on the windshield of a vehicle, said display comprising:
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an electromagnetic inducer for detecting the changes of magnetic field generated by a plurality of magnetic force generators so as to sense an electromagnetic signal; the magnetic force generators secured on the wheel transmission shaft of the wheels for measuring the speed of the vehicle in conjunction with the sensing by the electromagnetic inducer; a counting circuit device comprising microprocessor IC and an interface circuit, which receives the electromagnetic signal via a signal line so as to calculate the speed of the vehicle; a projection display comprising a transmissive lens of a particular magnification, a fluorescent display lamp, a colored film having a transmissivity of only 70%, a dark colored transparent shield, a housing, a base, and an angle adjustment knob wherein the horizontal image displayed on the fluorescent display lamp is double-refracted by said transmissive lens and projected onto the windshield through said colored film and then reflected to form into the correct image; a function control box connecting to said projection display via a control function line for transferring the control signal to said counting circuit device, said function control box having a control panel with touch control keys for setting the contents of the informations to be displayed; and a light colored transparent displaying film having coated with hydrogel for displaying the image while preventing double images and the interference by the light rays coming from outside the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification