Abstract: A low profile LED lamp bulb with high efficient heat dissipation is disclosed. Each of the lead frame unit has a top-down tapered metal section on bottom end adaptive for being bent inwards to form a lead frame bottom cup suitable for fitting in the low profile LED lamp. A modification embodiment is that a heat sink independent from electrode is attached to a backside of the lead frame with nonconductive adhesive material, heat and electricity are independent from with each other, so that no interference between heat and electricity, and heat can be dissipated mainly from the heat sink.

Abstract: An air-cooled lamp bulb includes a central tube and a circular light wall. The circular light wall is formed by a plurality of light units surrounding the central tube and emitting light beams in a direction away from the central tube. A top frame supports the circular light wall on top. A top opening is formed in the top frame. A bottom gap is formed between a bottom of the central tube and a bottom of the circular light wall. An air passage is formed between the central tube and the circular light wall. The air passage connects the top opening and the bottom gap for allowing air flow through the air-cooled lamp bulb.

Abstract: An air-cooled lamp bulb includes a central tube, a circuit board disposed inside the central tube, a circular light wall surrounding the central tube, a transparent dome surrounding a top end of the circular light wall and having a top central opening, and a first air passage formed between the central tube and the circular light wall. The circular light wall is formed by a plurality of light units arranged side by side. Each of the light units has a light source mounted adjacent a top end of the central tube. The transparent dome is arranged for modifying light emitted by the light sources. The first air passage allows air flow through the air-cooled lamp bulb.

Abstract: A rotatable bulb with single side illumination is disclosed, which includes a plastic housing 65; the plastic housing 65 in combination with a top portion of the lamp is made rotatably with reference to its lamp base 50. The plastic housing 65 has an axis tube 653 at bottom end; a spring metal 61 is configured on the axis tube 653 at an end; the spring metal 61 is electrically, elastically coupled against the metal screw 52 from inside.