Waterproof shell structure capable of balancing internal and external pressure and LED (Light Emitting Diode) driving power supply

Abstract

The invention relates to the field of LED driving power supplies, and in particular relates to a waterproof shell structure capable of balancing internal and external pressure and an LED driving power supply. The waterproof shell structure comprises waterproof side covers and a shell with through holes at two ends; and the waterproof side covers are respectively arranged over the through holes at two ends of the shell. By applying the technical scheme in the embodiment, the waterproof effect is realized by combining the waterproof side cover with the shell; the waterproof side cover comprises a cover plate and a waterproof gasket, which are mutually laminated to form a cavity; the waterproof gasket is provided with a groove and a bump; in the same way, when the driving power supply generates high temperature, positive pressure is generated in the driving power supply; the bump of the waterproof gasket can be concave downwardly; the cavity is deformed, such that buffering of positive pressure is realized; when the driving power supply stops working, the cavity can be reset or kept in the present state, such that generation of negative pressure can be prevented; because positive pressure and negative pressure are inhibited, water or water vapour cannot enter the power supply; therefore, the sealing property is higher; and the service lifetime is longer.

Description

technical field [0001] The invention relates to the field of LED driving power supply, in particular to a waterproof shell structure capable of balancing internal and external air pressure and an LED driving power supply. Background technique [0002] The LED drive power supply is a power converter that converts the power supply into a specific voltage and current to drive the LED to emit light. Usually: the input of the LED drive power supply includes high-voltage power frequency AC (that is, mains), low-voltage DC, high-voltage DC, low-voltage high-voltage Frequency AC (such as the output of an electronic transformer), etc. The output of the LED drive power supply is mostly a constant current source that can change the voltage with the change of the LED forward voltage drop value. [0003] The waterproofing of LED driving power supply is a major problem in the power supply industry. The existing solution is to fill the casing of the driving power supply with heat-conducti...

AI Technical Summary

Problems solved by technology

[0004] However, the above methods also have defects. When the driving power is working, the driving power will generate high temperature when it is energized. The high temperature will cause the heat-conducting sealant potted inside the driving power to expand, and the glue will push the joint part of the driving power shell, and a gap will appear at the joint. The gas inside the drive power overflows outward, and when the drive power stops working, the inside of the drive power cools and shrinks, generating negative pressure, and water vapor or water enters the drive power from the gap, corroding components, resulting in a decrease in insulation resistance, and finally a failure cause complete destruction

Images