The present invention relates to a method for manufacturing a lamp housing, and more particularly, to a method for manufacturing a lamp housing in which protruding upper and lower portions of the lamp housing are assembled and coupled to prevent a gap in the lamp housing after assembly. Assembling work of the lamp housing is quick and convenient, and moreover, the appearance of the lamp housing is more beautiful, so that a visual ornament effect is improved. The method for manufacturing the lamp housing protecting a lamp by installing the lamp in the lamp housing includes the steps of: vacuum-forming an upper plate with a hemispheric shape at a vacuum former having a die shaped as the upper plate of a lamp housing vacuum-forming a lower plate with a ring shape at a vacuum former having a die shaped as the lower plate of the lamp housing processing the upper and lower plates by fixing the vacuum-formed upper and lower plates to a molding die, perforating various through-holes such as bolt holes, and bonding and fixing an insert nut cutting the outer peripheral surface of an external lower end of the upper plate in a predetermined depth to form a recessed part and cutting the outer peripheral surface of an internal lower end of the lower plate in a predetermined depth to form a coupling part cutting the outer peripheral surface of the lower side of a floodlight plate made of translucence resin materials in a predetermined depth and assembling by coupling and fixing the floodlight plate to the lower plate, and coupling and fixing the coupling part of the lower plate to a protruding part of the upper plate after placing the protruding part on the coupling part.COPYRIGHT KIPO 2016본 발명은 램프 하우징의 제조방법에 관한 것으로, 보다 상세하게는 램프 하우징을 상부와 하부를 돌출되어 조립, 체결되도록 함으로써, 조립 후 램프 하우징에 이격 틈새가 발생하는 것을 차단하고, 램프 하우징의 조립 작업이 신속하고 편리할 뿐만 아니라, 램프 하우징의 외관이 보다 미려하여, 시각적인 장식효과를 향상시킬 수 있도록 한 것이다.본 발명은 램프를 내부에 설치, 보호하도록 하는 하우징의 제조방법에 있어서,램프 하우징의 상판 형상의 금형이 구비된 진공성형기에서 반구형상의 상판을 진공성형하도록 하는 상판 성형공정과램프 하우
