Patent ID: 8198795

Claim:
A bulb structure of assembling-type car lamp, comprising a lamp housing and a bulb unit assembled to the lamp housing; the bulb unit having a mounting base, a bulb holder, and a bulb; the mounting base being provided with a plurality of electric pins and including a round plate and a raised seat forward protruded from the round plate; the bulb being mounted on the mounting base via the bulb holder to electrically connect to the electric pins; the bulb unit further having an annular ring portion rearward protruded from one side of the round plate opposite to the raised seat; the annular ring portion being formed on an outer wall surface with a plurality of anti-slip ribs; and the electric pins being rearward projected beyond the annular ring portion, wherein the bulb holder includes a holding seat and an adjusting seat, and the adjusting seat being held in the holding seat in a position-adjustable manner, wherein the raised seat of the mounting base internally defining a receiving space, the holding seat of the bulb holder being fixedly received in the receiving space, and the bulb being fixedly connected to the adjusting seat, wherein the holding seat includes a ring body having a plurality of clamping plates spaced along a front edge thereof; and the adjusting seat being positioned in between the clamping plates and clamped in place by the clamping plates, wherein the ring body of the holding seat further has at least one pair of spaced locating plates provided at a rear edge thereof, and the receiving space defined in the raised seat is provided on a peripheral wall thereof with a pair of locating slots corresponding to the locating plates, and the holding seat being received in the receiving space with the locating plates separately tightly inserted in the locating slots, wherein the bulb unit further having a cover plate closed to a rear open end of the annular ring portion; and the cover plate being provided with a plurality of through holes in a number and at positions corresponding to those of the electric pins, so that the electric pins are projected beyond the cover plate via the through holes, wherein the cover plate is provided along a circumferential outer wall surface with a radially protruded flange, and the annular ring portion is provided on an inner wall surface of the rear open end with an annular groove corresponding to the flange.