Rear window stop lamp for motor vehicles

A rear window stop lamp for a motor vehicle, which is energizable when a brake of the motor vehicle is applied, comprising:

• a resin-molded body adapted to be directly mounted on an interior side of a rear window glass sheet of the motor vehicle, said resin-molded body having a plurality of cavities defined therein and having respective curved reflecting surfaces;
• a plurality of LED chips disposed in said cavities, respectively, and positioned substantially at respective focal points of said curved reflecting surfaces;
• a plurality of transparent resin-molded bodies surrounding said LED chips, respectively;
• said cavities, said curved reflecting surfaces, said transparent resin-molded bodies, and said LED chips jointly constituting respective LED units;
• a light distribution lens plate covering openings of said cavities for directing rearwardly light beams emitted from said LED chips and reflected by said curved reflecting surfaces;
• and
• a printed electric wire board embedded in said resin-molded body for energizing said LED units, and a thermal expansion inhibiting plate embedded in said resin-molded body, said thermal expansion inhibiting plate being made of a material having a coefficient of thermal expansion which is closer to that of the rear window glass sheet than to that of the resin-molded body.