| 摘要 |
PURPOSE:To prevent dangers of a rear-end collision,etc., by automatically emitting revolving right to the surroundings when siren sound exceeds a specified value, and automatically, emitting flickering light ahead or back, especially strongly to vehicles behind, when the siren sound becomes a specified value or less. CONSTITUTION:Inside a diffusion type alarm lamp 10, respective pairs of rotary lamp 15R, 16R, 15L, 16L are disposed. The diffusion type alarm lamp 10 is controlled by an electronic siren amplifier 60 provided in a vehicle room. A siren amplifier circuit 52 provided inside the electronic siren amplifier 60 gives control signals to a line 64 to change action of the diffusion type alarm lamp 10 in two ways based, namely, when the siren sound becomes a specified value or less, and the siren sound exceeds the specified value. |
