| 摘要 |
A downward-emitting LED lamp comprises a lamp cap (6), a lamp holder (5), an LED light source component (2), a lens (7), a reflector (4), a light transmissive cover (3), and a heat dissipation body (1). The lamp cap (6), the lamp holder (5), and the reflector (4) are arranged at one end of the light transmissive cover (3), and the heat dissipation body (1) is fastened at the other end of the light transmissive cover (3). The inner end of the heat dissipation body (1) is located in the light transmissive cover (3), and the outer end of the heat dissipation body (1) extends out of the light transmissive cover (3). A light emitting chamber is formed between the reflector (4) and the light transmissive cover (3), and the LED light source component (2) and the lens (7) are arranged in the light emitting chamber. A light emitting side of the LED light source component (2) is mounted on the lens (7), and a backlight side is mounted at the inner end of the heat dissipation body (1). By using the arrangement of the conical heat dissipation body (1), the downward-emitting LED lamp can provide good heat dissipation for the LED light source component (2). The reflector (4), the light transmissive cover (3), and the lens (7) form a light source chamber for secondary light distribution, so that downward emission is achieved, avoiding the problem that most of light is emitted to the ceiling, and improving the effective utilization of light. |
