wrote ...
Richard Crowley wrote:
| wrote ...
| Still, IMHO, a bad design. Active cooling should not be needed
| when there is no active heating.
|
| Modern projectors (especially "road-warrior", portable type),
| servo-controlled lamps, etc. etc. would be non-viable in the
| modern market it they were designed large enough to allow
| unaided convection cooling. Furthermore the heat is so
| concentrated far inside that I question whether one could
| design such equipment for natural cooling regardless of size.

But wasn't the OP talking about a home display model?

How do you think they get that bright, large-area back-light
without what you call "active heating"? Even fluorescent
sources (and their ballasts, etc.) get pretty warm.