Heat dissipation mechanism and LED film and television lamp

Abstract

The invention discloses a heat dissipation mechanism and an LED film and television lamp, and relates to the technical field of LEDs. The heat dissipation mechanism comprises a fixing device and a light-emitting device. The fixing device comprises a first heat dissipation part and a second heat dissipation part, a heat dissipation interval is arranged between the first heat dissipation part and the second heat dissipation part, and the first heat dissipation part is provided with a containing cavity and a heat dissipation channel penetrating through the containing cavity; a control element is arranged in the containing cavity, and the heat dissipation channel comprises a first funnel part provided with a wide opening end and a narrow opening end, a second funnel part provided with a thin opening end and a thick opening end, and an air guide part provided with a radiator. The light-emitting device comprises a light-emitting part arranged on the second heat dissipation part and a plurality of heat dissipation ridges arranged on the back face of the light-emitting part at intervals. The light-emitting part is electrically connected with the control element, each heat dissipation ridge is provided with a confluence notch, and the confluence notches are aligned with one another to form a confluence channel aligned with the heat dissipation channel; therefore, the temperature of the control panel is slightly influenced by the heat of the LED, the temperature uniformity of the light-emitting device during working is improved, the waterproof performance is improved, and the heat dissipation noise is reduced.

Description

technical field [0001] The invention relates to the technical field of LEDs, more specifically, to a heat dissipation mechanism and an LED video light. Background technique [0002] In the field of LEDs, LEDs are widely used in various fields due to their advantages of compact structure and high brightness; in contrast, LED light sources also have certain shortcomings or deficiencies, because the luminous quality and luminous efficiency of LED light sources are in the It will be affected by temperature to a large extent, and once multiple LEDs are integrated into high-power LED lamps such as LED film and television lights, due to the high heat generated by themselves, LED lamps will not work properly, especially for For professional lamps such as LED film and television lamps, this is a defect that seriously affects the normal use of equipment or machines as a whole. [0003] The specific reasons for some defects are as follows: [0004] First, when the LED lamp is working...

AI Technical Summary

Problems solved by technology

[0004] First, when the LED lamp is working, a large amount of heat will be transferred to the control circuit board located at the back of the LED setting area, and when the temperature of the control circuit board is too high, its control accuracy and response speed will be affected; the heat generated by the LED lamp The influence coefficient on the temperature of the control board is large;

[0005] Second, the heat dissipation of the LED depends on the structure such as the heat dissipation fins or the heat dissipation fan on the back. However, no matter what kind of structure is installed, the closer the area to the heat dissipation fan is, the better the heat dissipation effect is, which leads to the temperature difference in the LED installation area. Uniformity, which makes it difficult for the temperature control device in the equipment or machine to obtain accurate temperature, and it is impossible to perform correct temperature correction according to the temperature feedback, resulting in the inability to obtain suitable brightness, color temperature and color rendering effect after temperature correction; LED lamps Poor temperature uniformity;

[0006] Third, liquid can easily enter the product along the air guide channel, causing short circuit and other faults to the internal electronic components. As a heat dissipation structure, the air guide channel becomes a dead angle for liquid to infiltrate, and the waterproof performance of LED lamps is poor;

[0007] Fourth, the airflow generated by the fan inside some LED lamps has a large wind resistance when flowing, which produces a large heat dissipation noise, which cannot meet the noise requirements of products such as film and television LED lamps.

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