| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that electric power is not effectively utilized since a voltage of a battery is divided by resistance to light a light emission diode, namely, since the voltage other than the voltage applied to the light emission diode is converted to thermal energy by resistance in a conventional indoor light device for a vehicle. <P>SOLUTION: In the indoor light device for the vehicle, an in-series circuit of the light emission diode 3, a miniature lamp 4 and a push switch 5 is connected to between a positive electrode of a power source B and a welding ground, and a resistor 7 is connected to between a connection point of the light emission diode and the miniature lamp and the welding ground of the power source. The resistance value of the resistor is made to a value that the light emission diode and the miniature lamp are lighted at high brightness when the push switch is closed, and to a value that only the light emission diode is slightly weakly lighted when the push switch is released. <P>COPYRIGHT: (C)2009,JPO&INPIT |
