Detachable lamp assembly

A lamp, comprising

• a lamp body assembly (1) having a lamp body (12) and a fixing frame (13) disposed on an outer wall of the lamp body (12) which is fixedly connected to the lamp (12),
• a positioning frame assembly (2) surrounding a periphery of the lamp body assembly (1) for assembling the lamp body assembly (1) to a fixture,
• wherein:
• the lamp body assembly (1) is detachably assembled with the positioning frame assembly (2),
• the lamp body (12) comprises a light-emitting cylinder (121), a light source (122) located at a rear end of the light-emitting cylinder (121), and a detachable lens assembly (123) at a front end of the light-emitting cylinder (121),
• the lens assembly (123) comprises a lens (125) at an illumination end of the light source (122) and connected to a light source main board (124), and a decorative ring (126) disposed at a light emitting end of the lens (125) which matches an inner wall of the light-emitting cylinder (121), wherein
• an inner wall of the decorative ring (126) has a carrying platform (128) in contact with a light incident surface of a filter (127), and at least two bumps (129) disposed above the carrying platform (128),
• a side wall of the decorative ring (126) is separated by two slits (13) facing a light incident end of the light-emitting cylinder (121) to form an elastic wall (131), and one of the at least two bumps (129) is located on the elastic wall (131).