| 摘要 |
A heat dissipation facilitating LED lamp comprises a lamp cap (1), a heat dissipation lamp cup (2), a driving power supply housing (3) and a blister casing (4). The inside of the heat dissipation lamp cup (2) is of a hollow structure. The heat dissipation lamp cup (2) is sleeve-connected to the driving power supply housing (3). A gap (6) for ventilation is kept between the driving power supply housing (3) and an inner wall of the heat dissipation lamp cup (2). A lower portion of the driving power supply housing (3) is provided with a receiving ring (18) urged against the bottom of the heat dissipation lamp cup (2). The receiving ring (18) is provided with multiple holes (19) for maintaining air circulation between the ambient air and the gap (6). An upper portion of the heat dissipation lamp cup (2) is provided with a lamp holder (8) higher than an upper surface of the lamp cup (2). A side wall of the lamp holder (8) is provided with a substrate (9). An LED light source (10) is fixed on the substrate (9). A ventilation passage (11) vertically running through the whole lamp holder (8) is disposed in the lamp holder (8). The top of the blister casing (4) is provided with a ventilation hole (17). The ventilation hole (17) of the blister casing (4), the ventilation passage (11) of the lamp holder (8), the gap (6), and the holes (19) form an air flow channel in communication with the outside air. The air flow channel is disposed in the LED lamp, so that air enters and takes away the heat generated by the driving power supply and the LED light source, so as to decrease the temperature of the environment where the power supply operates, thereby ensuring the service life thereof. |
