US Patent 11466848 Light engine module mates with heat sink

A lighting device system includes at least one lighting device module having a module housing configured to be inserted at least partially through an opening in a panel, and at least one heat sink member having a contact surface. The at least one heat sink member is located adjacent the opening in the panel. The module housing is held in contact with the contact surface of the at least one heat sink member when the module housing is inserted at least partially through the opening in the panel in an installed state. The module housing is configured to be selectively withdrawn from the contact surface of the heat sink member, through the opening in the panel.