A sun beside a package, requiring storage out of direct light.
A sun pictogram means the package must be kept out of direct sunlight — an instruction about light and heat exposure rather than about temperature alone.
In the ISO 780 handling series, a sun pictogram indicates that the package must be protected from direct sunlight during storage and transport.
Contexts: Packaging
A circle with short straight strokes radiating outward from its edge at even intervals, set beside a square package outline.
The astronomical sun stands for the star itself; this one is a handling instruction that borrows the drawing.
Both are used in packaging contexts.