Back to results
US 8,297,805 B2Granted
Device for cooling an optical module for a motor vehicle headlight
AssigneeValeo Vision
InventorsChristine Roucoules, Eric Mornet
Life of this patent
Estimating the term…
Abstract
A lighting and/or signaling device comprising at least one optical module equipped with a cooling unit, comprising at least one heat conductor, one end of which is placed spaced from the cooling unit, and is provided with a plurality of deflectors which channel a flow of cold air towards a heat-exchange surface of the cooling unit.
Claims20
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.
1 more element
A lighting and/or signaling device comprising:
- at least one optical module engaged with a cooling unit having a plurality of fins that define a plurality of air passageways for heat exchange;
- at least one heat conductor, a first end of which constitutes 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;
- said at least one heat conductor comprising a plurality of deflectors which channel a flow of cold air obtained from said first end, towards said plurality of fins of said cooling unit to permit exchange of heat between said flow of cold air past said plurality of deflectors and toward said plurality of fins, a space between said plurality of deflectors defining a guide channel for the flow of cold air which is delimited by said plurality of deflectors and opens into at least one of said plurality of air passageways;
- said plurality of air passageways 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 plurality of air passageways, said plurality of deflectors being oriented generally transversely to an orientation of a general plane in which said at least one passage lies so that said plurality of deflectors may guide air through said guide channel and onto said plurality of fins.
1 more element
Dependencies are inferred from the claim text.