wall, fence
屏 centers on a physical barrier that divides or encloses space: a wall or fence. It can also extend to the idea of screening or shielding something from view.
屏 combines 尸 (a roof or covering) with 并, which likely contributes the sound. The character originally referred to a screen or partition inside a building, later extending to walls and fences.
The outer 尸 is like a roof or cover, and inside 并 looks like two panels joined together. Picture a folding screen or a wall made of connected panels under a roof: 屏 is a wall or fence.
For ヘイ, imagine a wall so tall it reaches the heavens: 'hey' (ヘイ) is what you shout to get someone's attention over the fence.
folding screen
painted folding screen with scenes of early European visitors to Japan
living in retirement
bated breath; being cowed into silence
solitary confinement
sheer cliff
picture drawn on a folding screen
bed(side) screen
fence; bulwark; guarding wall
solitary confinement in a dark cell without bedding (for up to one week)
folding screen covered with gold leaf
partitions in a Japanese house (e.g. screens, sliding doors, etc.)