LED signal lamp for use in vehicle for emitting amber colored signal light, has LEDs formed as surface mount device chip to emit warm-white light, and amber colored filter directly arranged on surface mount device chip

摘要

The lamp has LEDs (2a, 2b) formed as a surface mount device (SMD) chip to emit warm-white light, where each LED includes a phosphor layer, over which the warm-white light is produced. The LED is made of semiconductor material selected from one of indium gallium nitride and aluminum gallium indium phosphate. An amber colored filter (4) is directly arranged on the SMD chip, where the filter is an absorption filter such as long pass filter. The filter is adhesively fixed on a ceramic circuit board (1) via a frame (3).