Down lamp

The utility model discloses a down lamp, including face ring, anti - light cup, anti - light cup collet, light -passing board, light source, light source aluminum substrate, a lamp section of thick bamboo, light source drive, binding post box, link plate, wire and a plurality of screw, the whole both ends open -ended cylinder that is of a lamp section of thick bamboo, lamp section of thick bamboointernal fixation is provided with the circular pad board, the circular pad board is separated the inner chamber of a lamp section of thick bamboo and is inside and outside two sections, being provided with a plurality of heat radiation fins in that the inner chamber inner segment of a lamp section of thick bamboo is fixed, heat radiation fins's one end is hugged closely inner wall, the other endof a lamp section of thick bamboo and is hugged closely the circular pad board, it has a plurality of wiring holes and mounting hole to open on the circular pad board, face ring, anti - light cup, light -passing board, anti -