My knowledge is based on information available .
However, based on your description, it's possible that the logo represents a specific product line or branding element associated with Hitachi or the CV-W1600 model. Companies often use logos or symbols to distinguish their products and create a recognizable brand identity.
If you're curious about the logo on the packaging, I recommend checking the official Hitachi website, product documentation, or contacting Hitachi customer support to get accurate and up-to-date information about their branding and logos.