A liquid-cooled and heat-dissipating LED optical module

Abstract

The invention relates to a liquid-cooled and heat-dissipating LED optical module (100), which comprises a circuit board installation part (1) and a radiator (2) arranged at the lower end of the circuit board installation part. The circuit board installation part (1) has a hollow hemispherical structure, which defines a hemispherical cavity (103), and the outer surface of the spherical wall of the circuit board installation part (1) is fixed with a flexible circuit board (3). ), a plurality of LED lamp beads (301) are distributed on it, and a light outlet cover (4) is sleeved on the periphery of the flexible circuit board and fixed to the circuit mounting part (1) and / or the radiator (2) in a liquid-tight manner, so that the A cavity (104) is formed between the light emitting cover (4) and the circuit board mounting part (1), and the cavity and the hemispherical cavity (103) pass through multiple The through holes (102) communicate with each other, and the cavity (104) and the hemispherical cavity (103) are filled with cooling liquid (5).

Description

technical field [0001] The present invention relates to the optical module technology in the field of LED lighting, in particular to an LED optical module, in particular to a liquid-cooled and heat-dissipating LED optical module. Background technique [0002] Under the current common practice of LED heat dissipation, the heat conduction path can be explained as follows: LED heat sink - thermal grease - copper foil as large as the heat sink - aluminum substrate insulation layer - aluminum plate - heat sink. It can be seen that the heat conduction path from the LED to the aluminum substrate is only the same size as the heat sink of the LED. For high-power LEDs, it is not enough to dissipate heat in this way, but how to dissipate heat can take into account miniaturization, high power, and low cost, which is an unresolved problem. [0003] In this regard, Chinese patent application publication CN201010247353.3 discloses a liquid-cooled LED lamp with a double-layer lampshade, wh...

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Problems solved by technology

[0008] 1. Since the LED is a directional light source, an effective light pattern conversion method is required to convert the small-angle light into an omnidirectional light. However, according to the usual practice, one way is to use a lens to convert the light angle, but it involves The light output efficiency is reduced and the cost is increased; another method is to change the planar arrangement of the LED lamp beads to a three-dimensional multi-directional arrangement, but the heat dissipation path is reduced and the thermal resistance is increased, the heat dissipation effect is deteriorated, and the light efficiency is reduced;

[0009] 2. The COB light source emits a lot of heat, which must be solved through good heat conduction. The heat conduction path should be as smooth as possible. According to the traditional method, after five or six layers of medium are transferred layer by layer, each layer has a large Thermal resistance, not to mention the insufficient contact surface caused by processing and assembly, resulting in huge air thermal resistance, how to most effectively export the heat generated by the LED light-emitting part, only direct contact with the light-emitting part can do this

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