Portable Drive-In Movie Screen

The idea

A drive-in movie you can have anywhere. The projector sits inside the car and throws onto a screen you carry with you, so the whole setup travels wherever you want to watch something.

I built it to make date nights with my girlfriend better, which turned out to be a useful design brief — it meant the thing had to be genuinely quick to put up, not a project that needed an afternoon of assembly every time.

Design constraints

That brief set the real engineering requirements:

Freestanding. No wall, no trees, no guy-lines — it has to hold itself up on flat ground.
Packs into a car. Along with the people and everything else you’re bringing.
Big enough to matter. An 80-inch screen at roughly 7 feet tall.
Cheap and repairable. If a leg cracks, it should be replaceable from a hardware store.

Those pull against each other. Freestanding and tall wants a wide, heavy base; packing into a car wants small and light.

CAD first

I modelled the entire frame in Fusion 360 before buying anything. With PVC you’re constrained to fittings that actually exist — specific elbows, tees, and pipe diameters — so working it out in CAD first meant the cut list and the fitting count were settled before I made a single cut.

Fusion 360 model of the screen frame

Building it

The body of the frame is PVC: cheap, light, stiff enough at this scale, and trivially repairable. The feet are wide enough to keep it stable without needing stakes or weight.

The assembled PVC frame standing without the screen fitted

With the screen fitted, it’s a full 80-inch surface held flat and square.

The finished frame with the 80-inch screen mounted

Packing down

The whole thing breaks down into a bundle of pipe that fits in the car alongside everything else.

The frame disassembled into a bundle of PVC sections

Result

A working portable screen that sets up on flat ground and takes a projected image well — and, from the front seat, a drive-in you can put anywhere.

The view from inside the car: a movie playing on the screen through the windscreen

The useful lesson was how much a soft, personal requirement — this has to be easy enough that we’ll actually bother — behaves exactly like an engineering constraint once you take it seriously. Setup time drove the whole design more than screen size did.