Fan blade structure, fan, and fan light

A fan, comprising:

• a fan body, and
• a plurality of fan blade structures, wherein
• the plurality of fan blade structures are arranged at the fan body, and can be folded or unfolded, and wherein:
• a fan blade structure of the plurality of fan blade structures comprises:
• an inner edge, located at a windward side, wherein the inner edge at least partially protrudes towards a leeward side, and the inner edge extends obliquely upwards, from one end of the fan blade structure close to a first rotational axis to one end of the fan blade structure facing away from the first rotational axis, to form an inner angle with the first rotational axis, wherein the inner angle remains less than 90 degrees as the inner edge extends obliquely upwards, and the inner edge comprises a first cambered segment and a second cambered segment, the first cambered segment connects to the second cambered segment, the first cambered segment and the second cambered segment are disposed on a same side relative to the first rotational axis, the first cambered segment protrudes towards the leeward side, and the second cambered segment protrudes towards the windward side;
• an outer edge located at the leeward side, wherein the outer edge protrudes towards the leeward side, and the outer edge extends obliquely upwards, from the end of the fan blade structure close to the first rotational axis to the end of the fan blade structure facing away from the first rotational axis, to form an outer angle with the first rotational axis, and a horizontal height of the outer edge is lower than a horizontal height of the inner edge, wherein the outer angle remains less than 90 degrees as the outer edge extends obliquely upwards;
• and
• a cambered surface, wherein the cambered surface is connected between the inner edge and the outer edge, and the cambered surface extends curvedly downwards from the inner edge to the outer edge,
• wherein a thickness of the fan blade structure decreases from the end close to the first rotational axis to the end facing away from the first rotational axis, and
• the fan blade structure is configured to be folded or unfolded with the fan body via the first rotational axis.

A fan lamp, comprising:

• a lamp assembly, and
• a fan, wherein the lamp assembly is arranged at a lower part of the fan, and the fan comprises:
• a fan body, and
• a plurality of fan blade structures, wherein
• the plurality of fan blade structures are arranged at the fan body, and can be folded or unfolded, and wherein:
• a fan blade structure of the plurality of fan blade structures comprises:
• an inner edge, located at a windward side, wherein the inner edge at least partially protrudes towards a leeward side, and the inner edge extends obliquely upwards, from one end of the fan blade structure close to a first rotational axis to one end of the fan blade structure facing away from the first rotational axis, to form an inner angle with the first rotational axis, wherein the inner angle remains less than 90 degrees as the inner edge extends obliquely upwards, and the inner edge comprises a first cambered segment and a second cambered segment, the first cambered segment connects to the second cambered segment, the first cambered segment and the second cambered segment are disposed on a same side relative to the first rotational axis, the first cambered segment protrudes towards the leeward side, and the second cambered segment protrudes towards the windward side;
• an outer edge located at the leeward side, wherein the outer edge protrudes towards the leeward side, and the outer edge extends obliquely upwards, from the end of the fan blade structure close to the first rotational axis to the end of the fan blade structure facing away from the first rotational axis, to form an outer angle with the first rotational axis, and a horizontal height of the outer edge is lower than a horizontal height of the inner edge, wherein the outer angle remains less than 90 degrees as the outer edge extends obliquely upwards;
• and
• a cambered surface, wherein the cambered surface is connected between the inner edge and the outer edge, and the cambered surface extends curvedly downwards from the inner edge to the outer edge,
• wherein a thickness of the fan blade structure decreases from the end close to the first rotational axis to the end facing away from the first rotational axis, and
• the fan blade structure is configured to be folded or unfolded with the fan body via the first rotational axis.