The utility model discloses a waterproof type ceiling down lamp, including integrated shell and installation clamp, the outside of integrated shell evenly is provided with the fin of heat dissipation, and the opening of integrated shell is provided with the support ring, and the outer wall of support ring is provided with two water baffle rings from inside to outside, the outside of support ring is provided with the protective cover, and the center of protective cover is provided with the light -transmitting lens piece, the utility model discloses integrated shell design, compact structure has reduced the
water leakage risk of joint place. The opening of integrated shell is provided with the support ring, and the outer wall of support ring is provided with two water baffle rings from inside to outside. The design of double water baffle rings can effectively block the invasion of external
moisture, improve the waterproof level of the lamp. The inner wall of protective cover is provided with the encapsulation outer groove and encapsulation inner groove respectively at the position corresponding to two water baffle rings, and the groove all is provided with the sealing
washer. This multiple sealing structure further enhances the waterproof effect.