Browse Prior Art Database

COLLAPSIBLE LOUVERS FOR ENHANCING HEAT FLOW IN NOTEBOOK COMPUTERS

IP.com Disclosure Number: IPCOM000014783D
Original Publication Date: 2000-Mar-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 3 page(s) / 68K

Publishing Venue

IBM

Abstract

(b) (a) Figure 1: Thermal Louvers in Base Portion of Notebook Computer (a) with display closed

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  COLLAPSIBLE LOUVERS FOR ENHANCING HEAT FLOW IN NOTEBOOK COMPUTERS

(b)

(a)

Figure 1: Thermal Louvers in Base Portion of Notebook Computer

(a) with display closed

(b) with display partially opened

(c) with display fully opened

This disclosure describes a method to both enhance the removal of heat from notebook computers and, in one configuration, maintain the thermal comfort zone for users. This is accomplished by incorporating collapsible louvers that, when extended, will serve as extended surfaces for heat removal, thus lowering overall thermal resistance to heat flow.

These louver mechanisms can be incorporated either in the bottom surface of the notebook (Figure 1) or the back side of the display panel (Figure 2). Mechanical linkages would serve to open the louvers as the display is swung into the computer's operating position, and likewise collapse the louvers for compact storage and transportation. The stationary pivoting

(c)

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points of the mechanism are both mechanically and thermally attached to the computer's outer casing so as to conduct heat to the louver plates. The orientation of the louver plates when in the open position is selected to promote the most efficient natural convection behavior possible.

Having the louver mechanism in the bottom of the computer translates to no longer having that surface thermally insulated. This surface can now be used as an additional path for heat rem...