Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Flexible Cable for Cooling a Portable System

IP.com Disclosure Number: IPCOM000116241D
Original Publication Date: 1995-Aug-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Mehta, A: AUTHOR [+3]

Abstract

Disclosed is the use of a cable, composed of material having an ultra-high thermal conductivity, to transmit heat within a portable computing device, such as a laptop computer, from a number of modules dissipating heat to a convective cooling structure lying along the back side of the display screen of the device.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 61% of the total text.

Flexible Cable for Cooling a Portable System

      Disclosed is the use of a cable, composed of material having an
ultra-high thermal conductivity, to transmit heat within a portable
computing device, such as a laptop computer, from a number of modules
dissipating heat to a convective cooling structure lying along the
back side of the display screen of the device.

      The Figure is a partial cross sectional side elevation of the
computing device, including a main housing 1 and a display housing 2,
which is rotated upward, into the position shown, during the use of
the device, so that a display screen 3 may be conveniently viewed.
Main housing 1 surrounds a circuit card 4 having a number of
heat-generating components 5 requiring cooling.  In a portable,
battery-powered configuration of this kind, it is particularly
difficult to provide effective cooling for such components with
conventional means, since the power consumed by a cooling fan or
blower makes the use of forced air cooling undesirable.

      According to the presently-disclosed method, cable 6 having a
high thermal conductivity is fastened to each of the components 5
with a clip 7.  The interface between each module 5 and the
associated clip 7 may be enhanced by using a reworkable thermal epoxy
or grease.  The cable extends into display housing 2, being
permanently bonded to a heatsink plate 8.  Heat is transferred from
the modules 5, through the cable 6, to the plate 7, which is in turn
cooled...