Abstract: A bulb holder structure includes a bulb holder, and a housing and a thermally conductive member fitting to the bulb holder. A protruding ring formed on an inner surface of the housing fits an annular base on a lower portion of the thermally conductive member. A plurality of protruding portions are peripherally distributed on an inner surface of the ring. An inner diameter defined by the protruding portions is smaller than an outer diameter of the base, that is, the ring forms an interference fit with the base of the thermally conductive member through the protruding portions, thereby effectively improving fit stability between the thermally conductive member and the housing, boosting yield, and ensuring excellent heat dissipation.

Abstract: A bulb lamp structure includes a base, a seat, a circuit board, and a bulb housing, and further includes a plurality of chips on which LEDs are mounted, a heat dissipater, and a double-sided board. The seat has a lower rim in which an air inlet opening is formed. The heat dissipater has a lower portion forming an annular hood that has an upper end on which a plurality of plate-like substrates is arranged to circumferentially delimit a chamber in communication with the air inlet opening of the seat. The chips are respectively mounted on outside surfaces of the substrates. The bulb housing has a top end having a central portion in which a ventilation hole is formed to correspond to an air outlet opening formed in a top of the heat dissipater. A large illumination angle can be effectively realized and automatic production can be facilitated.

Abstract: A double-sided LED light structure includes a casing that includes a base and a front chip arranged in the casing and electrically connected to the base and comprising an LED illuminant, wherein the casing has a rear end on which a rear chip that is electrically connected to the base and comprises an LED illuminant is mounted and a light-transmittable rear cover is set on and houses the rear chip. The front end of the light achieves concentrated illumination and the rear end achieves projection of supplemental light so that the LED light has a function of emitting light from two sides thereof to achieve a bettered three-dimensional illumination effect and also reduce the number of lights used.

Abstract: A double-sided LED light structure includes a casing that includes a base and a front chip arranged in the casing and electrically connected to the base and comprising an LED illuminant, wherein the casing has a rear end on which a rear chip that is electrically connected to the base and comprises an LED illuminant is mounted and a light-transmittable rear cover is set on and houses the rear chip. The front end of the light achieves concentrated illumination and the rear end achieves projection of supplemental light so that the LED light has a function of emitting light from two sides thereof to achieve a bettered three-dimensional illumination effect and also reduce the number of lights used.

Abstract: A bulb lamp structure includes a base, a seat, a circuit board, and a bulb housing, and further includes a plurality of chips on which LEDs are mounted, a heat dissipater, and a double-sided board. The seat has a lower rim in which an air inlet opening is formed. The heat dissipater has a lower portion forming an annular hood that has an upper end on which a plurality of plate-like substrates is arranged to circumferentially delimit a chamber in communication with the air inlet opening of the seat. The chips are respectively mounted on outside surfaces of the substrates. The bulb housing has a top end having a central portion in which a ventilation hole is formed to correspond to an air outlet opening formed in a top of the heat dissipater. A large illumination angle can be effectively realized and automatic production can be facilitated.