Yazaki Corporation

Yasushi Katayama

Masanobu Terao

Kyouichi Nagaoka

Osamu Hiraoka

A vehicle display device includes a digital display configured to display together a first integer value representing travel speed in kilometers per unit time and a second integer value representing travel speed in miles per unit time, and a controller configured to perform, at a time the second integer value is zero and the first integer value is positive, one of a correction to set the first integer value to zero and a correction to set the second integer value to a positive value, and display the first integer value and the second integer value on the digital display.

Vehicle display device

A display system is a display system which is installed in a vehicle and includes a liquid crystal display unit which outputs information representing a deviation amount of the current running speed of the vehicle from a speed limit set for an area where the vehicle is currently running.

Display device for vehicle

A printed circuit board is designed to meet the following requirements. A front-back copper foil residual rate difference a&#x2212;b falls within a range of &#x2212;10% to 10%, where the insulative board is divided into a plurality of divisions, in which front and back surface copper foil residual rates of each division are a % and b %, respectively. A difference (a&#x2212;b)&#x2212;(c&#x2212;d) between front-back copper foil residual rate differences of adjacent divisions falls within a range of &#x2212;10% to 10%, where the front and back surface copper foil residual rates of a division adjacent to the each division are c % and d %, respectively. There are not three or more consecutive divisions for which the difference between the front-back copper foil residual rate differences goes beyond a range of &#x2212;5% to 5%.

Printed circuit board

A heater apparatus includes: a heater unit including a heater resistor; a first switching unit disposed on a downstream side of the heater resistor for on/off controlling a power supply path from a supply voltage; a second switching unit disposed on an upstream side of the heater resistor for on/off controlling the power supply path from the supply voltage; and a controller outputting first and second control signals for on/off controlling the first and second switching units, respectively. The first switching unit is switched on when the first control signal is high, and the second switching unit is switched on when the second control signal is low. The heater unit is switched on when the sensor temperature is equal to or lower than a first threshold, and is switched off when the sensor temperature is equal to or higher than a second threshold.

Heater apparatus for a display panel

A purpose of the invention is to provide a control method for switching between scales in the vehicular instrument that can prevent erroneous recognition and perform highly safety displaying. When a vehicle information display of a scale A is changed to a vehicle information display of a scale B, emission of light for displaying a scale associated with the vehicle information display of the scale A is temporarily stopped, and after that, emission of light for displaying a scale associated with the vehicle information display of the scale B is started.

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Shizuoka, Japan

Yasushi Katayama