A lamp device includes a lamp seat, a lampshade having an inner inclined surface and defining an opening, and a securing unit having a cover shell and a plurality of locking mechanisms. The cover shell is disposed in the opening and connected to a mounting plate of the lamp seat. Each locking mechanism has a locking member having a ring portion that is disposed rotatably in a respective one of receiving notches of the cover shell, and an arm portion that is co-rotatable with the ring portion between an unlocked position, and a locked position where the arm portion is disposed outside of the respective one of the receiving notches and abuts against the inner inclined surface, such that the lampshade is fastened to the lamp seat.

A lamp device includes a lamp seat, a lampshade having an inner inclined surface and defining an opening, and a securing unit having a cover shell and a plurality of locking mechanisms. The cover shell is disposed in the opening and connected to a mounting plate of the lamp seat. Each locking mechanism has a locking member having a ring portion that is disposed rotatably in a respective one of receiving notches of the cover shell, and an arm portion that is co-rotatable with the ring portion between an unlocked position, and a locked position where the arm portion is disposed outside of the respective one of the receiving notches and abuts against the inner inclined surface, such that the lampshade is fastened to the lamp seat.

A recessed downlight fixture and method for installation is provided. The recessed downlight fixture can be installed in a retrofit application, after a ceiling is installed, through a pre-existing opening in that ceiling. Alternatively, a recessed downlight fixture according to a second embodiment can be installed before a ceiling is present. In either embodiment, the light source coupled to, for example, a heat sink, can be universally moved in three degrees of movement, rotationally, along a tilt axis, or further within the ceiling to increase or decrease the recess. All such universal adjustments can take place through and below the ceiling opening during or after installation.

A lighting apparatus includes an optical component housing, an optical component and a light source. The optical component housing has an optical container and an entrance opening. The entrance opening is disposed on a lateral side of the optical component housing. The optical component housing has a light escape side. The lateral side is at a different plane as the light escape side. The optical component is detachably inserted into the optical container via the entrance opening.a cover manually operable to reveal the entrance opening for inserting the optical component and operable to conceal the entrance opening.a light source. A light is emitted from the light source passing through the optical component and escaped from the light escape side.

A lighting apparatus includes an optical component housing, an optical component and a light source. The optical component housing has an optical container and an entrance opening. The entrance opening is disposed on a lateral side of the optical component housing. The optical component housing has a light escape side. The lateral side is at a different plane as the light escape side. The optical component is detachably inserted into the optical container via the entrance opening.a cover manually operable to reveal the entrance opening for inserting the optical component and operable to conceal the entrance opening.a light source. A light is emitted from the light source passing through the optical component and escaped from the light escape side.

An overall-assembly of a downlight, with a flangeless trim, and a spackle-frame have complementary structures for repeatably attaching or detaching the downlight to the spackle-frame merely by pushing the downlight into a central hole of the spackle-frame and without use of any external/separate tools. The flangeless trim has some upward protruding members that are configured to removably attached/detached to clips and housings-for-clips. The clips are housed within the housings-for-clips. And the clips and the housings-for-clips are retained in structures of the spackle-frame. The spackle-frame would typically be permanently installed within an appropriately sized hole in drywall (or the like), such as, but not limited to, ceiling drywall. In this way, such downlights may be readily installed or removed and all without use of external/separate tools.

An overall-assembly of a downlight, with a flangeless trim, and a spackle-frame have complementary structures for repeatably attaching or detaching the downlight to the spackle-frame merely by pushing the downlight into a central hole of the spackle-frame and without use of any external/separate tools. The flangeless trim has some upward protruding members that are configured to removably attached/detached to clips and housings-for-clips. The clips are housed within the housings-for-clips. And the clips and the housings-for-clips are retained in structures of the spackle-frame. The spackle-frame would typically be permanently installed within an appropriately sized hole in drywall (or the like), such as, but not limited to, ceiling drywall. In this way, such downlights may be readily installed or removed and all without use of external/separate tools.