Lamp head connection structure, lamp head, and lamp

A lamp head connection structure, comprising a connection member located on a lamp body and a connection seat located on a lamp head, wherein

• the connection seat is provided with a spherical recess structure;
• the connection member is a sphere, wherein the sphere is compatible with the spherical recess structure;
• the spherical recess structure has an inner diameter larger than a diameter of the sphere and an opening diameter smaller than the diameter of the sphere;
• and
• the connection member is embedded inside the spherical recess structure;
• and the lamp head is rotatable 360° relative to the lamp body,
• wherein the connection seat is embedded inside the lamp head, an outer side of the connection seat is shaped the same as an outer side of a lamp head housing where the connection seat is located,
• wherein the connection seat comprises a clamping part provided with the spherical recess structure;
• and the spherical recess structure extends from an upper end surface of the clamping part towards a lower part of the clamping part, and
• the lamp head housing is provided with a through-hole with a same contour as an outer peripheral side of an open end of the spherical recess structure, and the clamping part is inserted into the through-hole and connected to the lamp head housing,
• wherein a diameter of the through-hole is larger than the opening diameter of the spherical recess structure, and
• the outer peripheral side of the open end of the spherical recess structure is provided with a limiting part:
• an inner wall of the through-hole is provided with a support platform, and when the clamping part is inserted into the through-hole, the limiting part is placed on the support platform, and an upper end surface of the limiting part is located inside the outer side of the lamp head housing
• wherein a side wall of the clamping part is provided with multiple notches spaced in a circumferential direction and extending from top to bottom, and the limiting part is correspondingly provided with multiple sets of notches, dividing the limiting part into multiple arc-shaped portions;
• and the notches of the limiting part are opposite to and communicated with the notches of the clamping part,
• wherein the support platform comprises multiple arc-shaped platforms, the multiple arc-shaped platforms are arranged at equal intervals in a circumferential direction;
• and a length of the arc-shaped portion is greater than the interval between each two adjacent arc-shaped platforms, and
• an outer wall of each of the multiple arc-shaped portions is provided with a locking member, the locking member is provided with an L-shaped longitudinal section, comprising a vertical portion parallel to a central axis of the clamping part and a horizontal portion extending away from the clamping part;
• and the locking member enters into the lamp head from a position between two adjacent arc-shaped platforms and is clamped inside the lamp head housing.