Safety belt device for dining chair and portable chair

A safety belt device for dining chair, capable of being combined with a dining chair to confine a baby to the dining chair, comprising:

• a body comprising a first portion and a second portion corresponding to a ventral side and a dorsal side of the baby, respectively, and a third portion connected between the first portion and the second portion and corresponding to a crotch of the baby, wherein the first portion, the second portion, and the third portion collectively define an accommodation space for the baby to sit in;
• a shoulder belt assembly connected to part of an upper edge of the first portion and part of an upper edge of the second portion, to correspond to shoulders of the baby when the baby sits in the accommodation space;
• a fixed belt assembly extending from first side edges on both sides of the first portion towards the second portion and detachably connected to an outer portion of the second portion;
• a connection belt assembly connected to second side edges on both sides of the first portion, to form a closed connection part, wherein the safety belt device for dining chair is fitted over the dining chair through the closed connection part to be combined with the dining chair;
• and
• a seat cushion connected to the body, wherein the seat cushion is placed on a seat part of the dining chair for the baby to sit on when the safety belt device for dining chair is combined with the dining chair.