I'm building a space bucket and removed the plastic diffusers from 5 LED bulbs to get more direct light.

- Bulbs: LEDVANCE Value Classic A 100, model AC70645, 13W each, 220–240V AC, 95mA, 1521 lm.

- Total power: 65W (3 bulbs at 2700K, 2 at 4000K).

- Setup: The exposed LED boards are mounted on the lid, about 5cm above a proposed barrier.

- Barrier: 2mm clear polystyrene (PS, recycling code 6), 50×50cm, flexible, smooth surface.

I want to keep the bulbs without their diffusers and use this sheet to prevent contact with the LEDs. I don't want to buy additional equipment if possible.

How can I make this setup safe? Is the polystyrene suitable for the heat, and can a plastic barrier protect against the electrical risk of exposed LED boards? What would you do with these exact materials?