Illuminating plate for car

An illuminating plate for a car, comprising:

• a light guide plate;
• a light source which is located on a side end of said light guide plate;
• a cover disposed on a front surface of said light guide plate and provided with light transmitting window;
• and
• at least one light reflecting layer formed on a rear surface of said light guide plate so as to cover at least a corresponding area where said light transmitting window is projected onto said rear surface, and said light reflecting layer not covering all over the rear surface of said light guide plate.
• wherein at least one of said front surface and said rear surface of said light guide plate is subjected to half mirror treatment.