CN-121993769-A - High-power LED underwater lamp

Abstract

The invention belongs to the technical field of illumination, and particularly relates to a high-power LED underwater lamp. The heat radiation assembly comprises an aluminum substrate, a plurality of heat pipes, a heat radiation plate and heat radiation fins, wherein the heat pipes are embedded in the aluminum substrate and are in contact with the heat pipes, the heat pipes are radially distributed outwards in the center of the light source assembly, the aluminum substrate is in heat conduction connection with the heat radiation plate, the heat radiation plate is connected with the upper shell and forms a closed sealing cavity, and the heat radiation fins are in heat conduction connection with the heat radiation plate and are positioned on one side of the heat radiation plate, which is far away from the light source assembly. The heat pipes are embedded in the aluminum substrate and are distributed radially by taking the light source assembly as the center, so that heat can be quickly and uniformly diffused from the heat source to the periphery, local overheating is avoided, and meanwhile, the aluminum substrate, the heat dissipation plate and the heat dissipation fins form a continuous heat conduction path, so that the heat dissipation efficiency is improved.

Inventors

• ZHANG GUANWEN
• WU SHIZHONG
• LIU HONGHUA
• Kawamura kuniyasu

Assignees

• 广州市珠江灯光科技有限公司

Dates

Publication Date

20260508

Application Date

20260320

Claims (10)

1. 1. A high power LED underwater light, comprising: A housing assembly including an upper housing and a lower housing; a light source assembly; The heat dissipation assembly is arranged below the light source assembly and at least partially positioned in the lower shell; Wherein, the heat dissipation assembly includes: An aluminum substrate on which the light source assembly is mounted; the heat pipes are embedded in the aluminum substrate, the light source assembly is in contact with the heat pipes, and the heat pipes are radially distributed outwards from the center of the light source assembly; the heat radiation plate is connected with the upper shell and forms a closed sealing cavity with the upper shell, and the light source assembly is accommodated in the sealing cavity; And the radiating fins are in heat conduction connection with the radiating plate and are positioned on one side of the radiating plate away from the light source assembly.
2. 2. The high-power LED underwater lamp of claim 1, wherein the upper surface of the aluminum substrate is provided with radial grooves corresponding to the heat pipes one by one, and the heat pipes are embedded in the radial grooves.
3. 3. The high-power LED underwater lamp of claim 2, wherein the heat pipes are U-shaped copper pipes, a plurality of the heat pipes are symmetrically arranged on the aluminum substrate, and adjacent heat pipes are in contact with each other to conduct heat.
4. 4. The high-power LED underwater lamp according to claim 3, wherein two U-shaped copper tubes in the central area are arranged back to back, bottoms of the U-shaped copper tubes are in contact with each other for heat conduction, the other U-shaped copper tubes are sequentially arranged on the outer side of the central U-shaped copper tube, bottoms of the adjacent U-shaped copper tubes are connected with each other, and the plurality of U-shaped copper tubes are distributed in a radial outward diffusion mode integrally.
5. 5. The high-power LED underwater lamp of claim 1, wherein the radiating plate is a stainless steel plate, and the radiating fins are integrally extruded aluminum profile fins and comprise a plurality of parallel blades.
6. 6. The high-power LED underwater lamp of claim 1, wherein a sealing ring is arranged at the joint of the heat dissipation plate and the upper shell, the heat dissipation plate is fixedly connected with the upper shell through a fastening piece, and the sealing ring is pressed between the heat dissipation plate and the upper shell.
7. 7. The high-power LED underwater lamp according to claim 1, wherein toughened glass is arranged at the light-transmitting opening of the upper shell, a toughened glass sealing ring is sleeved on the edge of the toughened glass, a toughened glass pressing plate is arranged below the toughened glass sealing ring, and the toughened glass pressing plate tightly presses and fixes the toughened glass and the toughened glass sealing ring on the upper shell.
8. 8. The high power LED water bottom lamp of claim 1, wherein the side wall and the bottom of the lower housing are provided with a plurality of through holes for allowing water to enter the lower housing to directly contact the heat dissipation fins.
9. 9. The high-power LED underwater lamp of claim 1, further comprising an air bag, wherein the air bag is arranged below the radiating fins, the air bag is connected with the radiating plate in a sealing way through an air bag waterproof joint, and the air bag is communicated with the inner gas of the upper shell and used for balancing the air pressure in the sealing cavity.
10. 10. The high power LED water bottom lamp of claim 9, wherein the air bag is in an uninflated state in an initial state, and when the gas in the sealed cavity expands due to heating, the gas enters the air bag to expand the air bag.

Description

High-power LED underwater lamp Technical Field The invention belongs to the technical field of illumination, and particularly relates to a high-power LED underwater lamp. Background The underwater lamp has wide application in the fields of landscape engineering, aquariums, underwater operations and the like, and provides the visibility and the decorative effect of the underwater environment through the light source assembly. In the prior art, the design scheme of combining an LED light source with a heat radiation structure and a waterproof shell is generally adopted in the underwater lamp, heat generated on a light source assembly is transferred to a shell through the heat radiation structure (such as a metal fin), and then heat exchange is carried out between the surface of the shell and an external water body to realize heat radiation. However, in order to realize sealing protection, the waterproof casing has a structure which forms a hindrance to heat dissipation, and particularly when dealing with a high-power LED light source, the heat dissipation problem is more prominent. With the increase of the brightness requirement of underwater illumination, the LED power has been developed from tens of watts to hundreds of watts, the heat productivity of a unit area of a high-power light source is increased sharply, the heat is easy to accumulate in a light source installation area and cannot be dissipated rapidly, the temperature of an LED chip is increased sharply, and light attenuation, color drift and even burning of the light source are caused. Meanwhile, when the lamp works underwater, the light source heats to expand the air in the waterproof shell to generate positive pressure, and when the lamp is closed and cooled, the air in the waterproof shell contracts to generate negative pressure. This repeated pressure change causes fatigue failure of the seal structure, resulting in water penetration short circuit. The existing ventilation valve scheme tries to balance air pressure, but stability is easily affected due to air pressure accumulation in the long-term use process, performance risks in the aspects of dampproofing, moisture proofing, plastic shell expansion and the like exist, and reliability requirements of high-power lamps are difficult to meet. Aiming at the problems, it is necessary to provide an LED underwater lamp which has high heat dissipation efficiency, reliable sealing and good air pressure balance effect and is suitable for high power. Disclosure of Invention The invention provides a high-power LED underwater lamp, which aims at solving the problems of insufficient heat dissipation efficiency under high-power operation and tightness and reliability in an underwater environment. The high-power LED water bottom lamp comprises a shell component, a light source component and a heat dissipation component, wherein the shell component comprises an upper shell and a lower shell, the heat dissipation component is arranged below the light source component and is at least partially located in the lower shell, the heat dissipation component comprises an aluminum substrate, a plurality of heat pipes, a heat dissipation plate and heat dissipation fins, the light source component is arranged on the aluminum substrate, the heat pipes are embedded in the aluminum substrate and are in contact with the heat pipes, the heat pipes are radially distributed outwards in the center of the light source component, the aluminum substrate is in heat conduction connection with the heat dissipation plate, the aluminum substrate is located on one side of the heat dissipation plate facing the light source component, the heat dissipation plate is connected with the upper shell and forms a closed sealing cavity with the upper shell, the light source component is contained in the sealing cavity, and the heat dissipation fins are in heat conduction connection with the heat dissipation plate and are located on one side away from the light source component. Further, the upper surface of the aluminum substrate is provided with radial grooves corresponding to the heat pipes one by one, and the heat pipes are embedded in the radial grooves. Further, the heat pipes are U-shaped copper pipes, the plurality of heat pipes are symmetrically arranged on the aluminum substrate, and the adjacent heat pipes are in contact with each other to conduct heat. Further, two U-shaped copper pipes located in the central area are arranged back to back, the bottoms of the two U-shaped copper pipes are in contact with each other for heat conduction, the other U-shaped copper pipes are sequentially arranged on the outer side of the central U-shaped copper pipe, the bottoms of the adjacent U-shaped copper pipes are connected with each other, and the plurality of U-shaped copper pipes are distributed in a radial outward diffusion mode integrally. The radiating plate is made of stainless steel plate, and the radiating fins are integrally extruded alumi