First... caps lock hurting my brain... We'll still answer to lower case...
Second, yes, putting a high wattage bulb too close to a cardboard box filled with wood shavings is indeed a fire hazard. You either need to make sure it is touching no part of the brooder, or have a metal screen for the lamp to sit on, making sure it does not become too hot near the edges. Depending on brooder size, I'd just go with a regular bulb. Mine are fine with a 40 watt. I also used a box to start with. Safer for everyone involved. Just pay attention to them, if they look too cold, move it closer, too hot, move it further away.