| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized and thin luminous device with a simple structure, by arranging independent light sources of three primary colors in a reflecting member, dividing the signal from a music reproducing device into three kinds, that is, high-pitched tone signal, intermediate-pitched tone signal, and low-pitched tone signal, and outputting them to the corresponding light sources respectively. SOLUTION: A reflecting mirror opened on one end face side and having a U-shaped cross section is provided on one end face of a light guide plate, and light sources 7-9 of three primary colors (red: R, green: G, blue: B) are arranged in the reflecting mirror. The signal from a music reproducing device 24 is converted into the music signal by a spectrum analyzer 23, the music signal is divided into the high-pitched tone signal, intermediate-pitched tone signal, and low-pitched tone signal by a high-pass filter 20, a band-pass filter 21, and a low-pass filter 22 respectively, and the signals are outputted to the corresponding light sources 7-9 via a transistor 19 and an inverter 18. The luminance of the light sources 7-9 is changed by the strength of the outputs. The color of the light guide plate is infinitely changed in resonance with music by the combination of three primary colors R, G, B. |
