LED BULB LAMP CAPABLE OF WIDE ANGLE LIGHT EMISSION

摘要

Disclosed is an LED bulb lamp capable of wide angle light emission, comprising an LED (1), a heat dissipation device (2) and a lamp cover (3), wherein the heat dissipation device (2) is split into two portions, a lower portion (21) being connected to a lamp holder (6) of the lamp and an upper portion (22) being of the shape of a multi-sided truncated pyramid with a small top and large bottom, each faceted side of the truncated pyramid forms an included angle of 10° ≤&thetas;≤ 25° with a vertical central axis of the lamp, the upper and lower portions of the heat dissipation device (2) communicate with each other, at least one LED (1) is mounted on each faceted side, and the upper portion (22) of the heat dissipation device (2) is covered by the lamp cover (3). The bulb lamp can expand light rays radiated in a small angular range into most of the field of the bulb, achieving an ominidirectional light distribution type effect, and taking into consideration the needs for light-emitting properties and heat dissipation efficiency.