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 Dark look LED automotive lighting

Details
Inventors: Calderas, Jeffrey Jose;
Assignee: General Motors Corporation (Detroit, MI)
Primary Examiner: O'Shea; Sandra
Assistant Examiner: Tsidulko; Mark
Attorney, Agent or Firm: Hargitt; Laura C.

Automotive lamps are configured having at least one array of light emitting diodes (LEDs) supported within the lamps. A bezel is positioned in each lamp adjacent to the LEDs, the bezel having a dark surface, the dark surface having a high gloss finish with reflector shaped surfaces to reflect light from the LEDs while absorbing visible light from external sources. A lens of light transmitting material covers the array of LEDs. The automotive lamp is especially useful as a rear combination lamp having red LEDs serving both tail light and stop light functions, as well as amber or red LEDs providing turn and hazard signals. A center, high-mounted stop lamp (CHMSL), also using an array of LEDs surrounded by a dark bezel with high gloss reflector shaped surfaces, is used in combination with a pair of the rear combination lamps. In one embodiment the rear combination lamps include side marker LEDs.

DETAILED DESCRIPTION In view of the aforementioned considerations, the present invention is directed to an automotive lamp comprising an array of light emitting diodes (LEDs) supported within the lamp.
A bezel having a dark surface for absorbing visible light from external sources is positioned adjacent to the LEDs.
The dark surface of the bezel has a high gloss finish or other reflective area at least adjacent the LEDs to reflect light from the LEDs, while the dark surface absorbs visible light from external sources.
A lens of light transmitting material covers the array of LEDs.
In a further aspect of the invention, the dark surface is substantially black and the lens is clear.
In another aspect of the invention, the automotive lamp is a rear combination lamp assembly including a first array of LEDs which emit red light to function both as a tail light and as a brake light.
The rear combination lamp assembly further comprises a second array of LEDs that in one embodiment emit amber light to provide turn and emergency signals which flash.
A bezel surrounds the LEDs and is substantially black in color to absorb incoming light from exterior sources, such as sunlight, and includes a gloss finish to reflect light rearwardly from the LEDs.
The bezel is mounted in a housing and a lens is positioned over the bezel and the arrays of LEDs.
In a preferred arrangement of the LEDs within the rear combination lamp assembly, the LEDs are arranged in vertical columns and at least a rearwardly facing reflector is positioned adjacent to the columns of LEDs.
In a preferred embodiment of energizing the LEDs, the LEDs of the first array are connected to a power supply which is connected with both a road light control system and a brake system in a vehicle.
The power supply has a first mode of a reduced duty cycle for illuminating the LEDs of the first array only as taillights, and has a second mode activated by the braking system for delivering current at a higher percentage of the duty cycle to the LEDs of the first array



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