Publication Date: 2011-Oct-19
The IP.com Prior Art Database
Disclosed is a method to transfer heat from within a notebook computer to the back of the display panel utilizing a thermal hinge
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A thermal hinge to transfer heat between two surfaces that rotate relative to each other is shown in figure 1. The hinge consists of two separate sections, each of which may be described as equally spaced segments of a thick-wall cylinder or rings mounted on a base plate. The base plate and rings are formed out of a high thermal conductivity material to promote thermal conduction heat transport. The cylindrical segments or rings of the bottom section fit in between the cylindrical segments or rings of the top section. A pin or shaft holds the two sections together and provides an axle for rotation. Typically, one part of the hinge will be stationary and thermally connected to the heat producing devices. The other part will be attached to a heat sink or other suitable heat transfer surface and rotates relative to the stationary part. The heat conduction path is from the edge of the stationary part, up through the stationary rings, across a small gap to the adjacent rotatable rings, and through their respective base plate out to the heat sink. Many interdigited rings may be used to minimize the effective total gap thermal resistance. Thermal conduction across the gaps may be further improved by the application of oil or thermal paste.
The thermal hinge can be a load bearing hinge or simply a hinge for transferring heat. Any number of materials can be use; but, aluminum, copper, or brass are the most likely. If paste or oil is used to enhance the ther...