US Patent 10928042 Downlight apparatus

A downlight apparatus includes a main housing, a light module capable of emitting light, a driving module electrically connected to the light module and configured to enable the light module to emit the light. The downlight apparatus includes an optical module mechanically coupled to the main housing, and the optical module is configured for receiving the light emitted by the light module and directing the light toward a forward direction. The downlight apparatus includes an installation module for facilitating installment of the main housing to a receptacle, and includes a replaceable surface housing removably coupled to the main housing.