Lighting unit

Details Lighting unit Lighting unit

1993-07-06

1994-12-20

Cole, Richard R.

Illumination

Revolving

362 32, 362231, 362235, 362800, F21V 800

Patent

active

053750438

ABSTRACT:
Disclosed is a lighting unit of an indirect type, capable of varying the luminance and color of illumination with respect to a target to be lit thereby ensuring an effective display of the target, and further capable of using itself as a display unit. The lighting unit comprises a light guide plate having one side fashioned into an uneven surface or a reflective surface; a plurality of light emitting diodes for supplying a light to the light guide plate, the light derived from the diodes being dispersed through the light guide plate; and a control section which controls actions including blinking of the light emitting diodes. At least a part of the diodes is intended to emit a light different in color from that of the others so that the color or blinking of illumination can be arbitrarily varied through the control by means of the control section.

REFERENCES:
patent: 4975809 (1990-12-01), Ku
patent: 5079675 (1992-01-01), Nakayama
patent: 5124890 (1992-06-01), Choi et al.
patent: 5136483 (1992-08-01), Schoniger et al.
patent: 5147129 (1992-09-01), Ku
patent: 5239450 (1993-08-01), Wall

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