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The main feature of the built-in radiator built-in radiator is that the heat dissipating fins are hidden inside the lamp, and the outer cover is covered with an insulated outer casing. The appearance can be designed to be more beautiful and not easy to accumulate dust; the venting holes or the inlet and outlet holes are provided through the outer casing to allow Free air flow; mainly for low-power LED bulbs. The arrangement of the heat dissipating fins mainly includes the radial arrangement of the fins and the axial arrangement of the fins. The fins are radially arranged with fins arranged radially. The fin direction is perpendicular to the axial direction of the bulb, and the angle is 90°. When the bulb is vertically ignited, the direction of the inlet and outlet holes is inconsistent with the direction of the airflow, which affects the removal of heat. A number of slots or holes can be formed in the fins to increase the flow of the axial airflow. The fins are axially arranged in the axial direction of the fins. The fins are arranged axially, in line with the axial direction of the bulb, at an angle of 0°. When the bulb is ignited vertically, the direction of the air inlet and outlet is the same as that of the airflow, which facilitates the flow of hot air to carry away the heat; when the bulb is ignited horizontally, the direction of the air inlet and outlet is inconsistent with the airflow, which may affect the heat dissipation effect, and needs to be noted and treated differently.
Split-type heat sink split heat sink, this structure divides the light-emitting part of the LED bulb into a plurality of relatively independent light chambers according to the circumferential light distribution requirement (generally divided into 3 to 5 chambers), and then the overall light is completed. Light output. In the application, the heat of the LED is respectively transmitted to the lower heat sink. Since each light chamber has an independent heat dissipation path, a heat dissipation channel is left along the cross direction to facilitate the dispersion of the heat point, which makes the heat dissipation easier. LED bulb split heatsink, multi-head radiator multi-head radiator, it can be seen as an alternative form of split heat. Specifically, the light-emitting portion of the LED bulb is divided into a plurality of independent light-emitting units (multiple heads) according to the circumferential light distribution requirement, and then the light output of the complete lamp is generally formed. The heat dissipation of the LEDs is respectively performed by the heat sinks of the respective light-emitting units. Since the distance between each other is large and the air flow is smooth, the heat generation points are dispersed, and the overall heat dissipation becomes easier, which not only improves the heat dissipation effect, but also makes the appearance novel and unique. The heat of the LED is transmitted by the heat pipe to the heat sink at the lower part of the lamp.
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