Patent ID: 8297805
Filing Date: 2012-10-30
Classification: F21S,F21V,F21Y,F28D

Abstract:
1. A lighting and/or signaling device comprising: at least one optical module which is equipped with a cooling unit provided with a heat-exchange surface having a plurality of fins; and a cooling device comprising at least one heat conductor, a first end having a surface which is cold relative to the air which surrounds said at least one optical module, said first end being placed spaced from said cooling unit and being provided with a plurality of deflectors which channel a flow of cold air obtained from said first end towards said heat-exchange surface of said cooling unit, such as to permit exchange of heat between said flow of cold air and said heat-exchange surface, a space between two adjacent deflectors of said plurality of deflectors having a guide channel for said flow of cold air which is delimited by the two adjacent deflectors and opens onto at least one passage which is delimited between two adjacent fins of said plurality of fins of said cooling unit; said at least one passage being oriented in a generally vertical plane relative to a general axis of gravity, such that a discharge of heat derives from naturally ascending movement of air as it heats up while circulating through said at least one passage, said two adjacent deflectors being oriented generally transversely to an orientation of a general plane in which said at least one passage lies so that said two adjacent deflectors may guide air through said guide channel and onto said two adjacent fins.