To provide a lighting device of a simple constitution giving a warning when the voltage of a battery loaded on an automobile drops, at a low cost.
A lighting device 1 including an LED light 2 taking a battery as a power supply is provided with a voltage drop detecting circuit 3 for detecting the input voltage from the battery and lighting a warning LED 18 when the voltage drops below a predetermined reference voltage. The voltage drop detecting circuit 3 is stored in a circuit storing case 7 removably fitted to a housing 4 of the LED light 2. The housing 4 includes: a pair of opposite side walls 4b and a bottom wall 4a, the upper part thereof is closed by an irradiation plate 5, and both ends thereof are closed by a pair of stop frames 8, 8 engaged with both ends. The stop frame 8 includes an engagement piece 8a inserted in a longitudinal engagement groove 9a of the housing 4, and the circuit storing case 7 is provided with an engagement piece 11a corresponding thereto and an engagement recessed part 11b in which the engagement piece 8a is inserted and mounted between the housing 4 and one of the stop frames 8.
JP2008084802A | 2008-04-10 | |||
JP2006044567A | 2006-02-16 |
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