| 摘要 |
PURPOSE:To make it possible to detect the position of a put out luminous lamp instantly by providing an examination device to output a series of pulses equal to the number of the luminous lamps, counters to receive the series of pulses, and an examination data response circuit to respond to the examination device by showing the operative/ inoperative condition of a lighting detection device, when the calculation value of the counter is coincident to a specific set value. CONSTITUTION:An examination device 4 to output a series of pulses the first, the second...No.n, equal to the number of the luminous lamps L1, L2..., a lighting detection devices 10 of the first, the second... No.n, which are made operative by lighting the luminous lamps L, and the first... counters C1, C2... in which different specific values are set and which receive the series of pulses the first, the second...No.n, are provided. Furthermore, an examination data response circuit to respond to the examination device 4 by showing the operative/inoperative condition of the lighting detection devices 10 the first, the second...No.n, when the pulse X of the series of pulses the first, the second...No.n, output from the examination device 4 is coincident to a specific value set in the first...counter C1..., is also provided. Consequently, when a lamp is put out, the position of the lamp L responding to the put-off can be detected instantly. |
