| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify an electrical connection and a circuit device by loading a relay circuit consisting of a turn-signal relay circuit driving the direction indicator of a vehicle over the indicating printed circuit board of a vehicular instrument device. SOLUTION: The circuit parts of other indicating devices are loaded over a printed circuit board 12S of a vehicle speed meter together with the other indicating devices to be disposed in the indicating area of a running speed meter so as to let the circuit parts be concentrically disposed. An engine revolution meter has no other indicating device disposed from its indication design stand point, as a result, the printed circuit board 12T of the engine revolution meter has a comparatively ample space for disposing the circuit parts, so that let the circuit part 14 for a relay be loaded by the printed circuit board 12T. Simultaneously, the power supply line of an indicating circuit TC is made identical to that of the circuit part 14 of a relay so as to be connected with the identical power supply pattern over a printed circuit board. A signal line for a turn-signal relay circuit is connected with the signal connecting connector to the indicating device together with the external connecting connector of an instrument device.</p> |
