CN211625183U

CN211625183U - LED lamp radiator

Info

Publication number: CN211625183U
Application number: CN202020146205.1U
Authority: CN
Inventors: 张忆雯; 李风华; 章方军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-23
Filing date: 2020-01-23
Publication date: 2020-10-02
Anticipated expiration: 2030-01-23

Abstract

The utility model provides a LED lamps and lanterns radiator has: the cylindrical substrate is characterized in that at least one group of radiating fins extend from the outer side of the cylinder wall of the substrate in a spoke shape, the radiating fins and the cylinder wall of the substrate are integrally formed, the radiating fins are rectangular or square, and the direction of one side of each radiating fin is the axis direction of the cylinder wall of the substrate. The scheme enables the inner cavity of the radiator to be communicated with the fins, enables most of heat to be directly subjected to convection heat dissipation with outside air, greatly improves the heat dissipation environment of the high-power LED lamp and improves the heat dissipation efficiency.

Description

LED lamp radiator

Technical Field

The utility model relates to an illumination lamps and lanterns field, concretely relates to LED lamps and lanterns radiator.

Background

The LED lamp is a novel solid light source which is bound to replace incandescent lamps and fluorescent lamps, and the fourth revolution of the lighting industry is created. Compared with the existing lighting lamp, the main technical bottleneck that the high-power LED for lighting faces is low in luminous efficiency, particularly low in light extraction efficiency and poor in heat dissipation capacity, and the heat generated by the lamp chip in the working process cannot be dissipated timely due to low heat dissipation efficiency in the use process of the high-power LED lamp radiator produced in the current market, so that the normal service life of the lamp is influenced.

At present, the luminous efficiency of an LED can only reach 10% -20%, 80% -90% of energy is converted into heat, in order to guarantee the service life of a device, the temperature of a lamp chip is guaranteed to be less than or equal to 100 ℃ through heat dissipation, and the LED lamp can work effectively, but the heat dissipation mode is mainly related to the following three aspects: firstly, the heat conductivity coefficient of the radiator material; the second is heat dissipation area, and the third is cold and hot air convection. At present, most manufacturers on the market solve the

difficulties

1 and 2, and for the difficulty 3, different solutions are provided. If the heat is not transferred in time, the heat accumulation can cause the temperature of the LED node to rise, and the temperature of the node directly influences the light emitting efficiency, the service life and the like of the device. With the development of high-power LED lamps towards high-light-efficiency and high-integration products, the heat dissipation problem of the high-power LED lamps is increasingly prominent, and the heat dissipation problem affects the light output efficiency of the LEDs and the service life of the devices. Therefore, the problem that the heat dissipation of the LED becomes the development of a high-power LED lamp is solved.

At present, manufacturers producing high-power LED lamp radiators at home and abroad adopt inner cavities isolated from fins, so that heat and air cannot be quickly convected, and the phenomenon of low radiating efficiency also exists in the aspect of product quality. The original LED lamp radiator has low radiating efficiency, and the main reason is that the inner cavity of the radiator is not communicated with the fins, so that heat can only be transferred to the fins from the radiator, and then the fins and outside air carry out convection radiation, and the radiating process has long time and low efficiency.

Disclosure of Invention

The purpose of the invention is: the LED lamp radiator solves the problem that the inner cavity of a base plate of a traditional radiator is not communicated with radiating fins, and the radiating fins are fixed on the base plate by bonding and assembling, so that the radiating efficiency is low.

The technical scheme of the invention is as follows: an LED lamp heat sink having: the cylindrical substrate is characterized in that at least one group of radiating fins extend from the outer side of the cylinder wall of the substrate in a spoke shape, the radiating fins and the cylinder wall of the substrate are integrally formed, the radiating fins are rectangular or square, and the direction of one side of each radiating fin is the axis direction of the cylinder wall of the substrate.

In order to increase the convection of the heat dissipation air, the utility model discloses further characteristic still has: the base plate cylinder walls of two adjacent radiating fins are hollow structures.

In order to fix the lamp holder or the installation part, the utility model discloses further characteristic still has: the cylinder bottom of the base plate is provided with a circular cover plate with reinforcing ribs.

In order to increase the heat dissipation area of the heat dissipation fins, the utility model discloses further characteristic still has: the radiating fins are provided with protrusions.

The invention has the beneficial effects that: the aluminum material with high heat conductivity coefficient is used as a radiator material, and is integrally extruded and molded, and then the aluminum material is processed into a vertical convection heat dissipation three-dimensional structure, so that the inner cavity of the radiator is communicated with the fins.

In order to rapidly carry out convection heat dissipation on the heat in the inner cavity of the radiator and the outside air in the aspect of heat dissipation effect and enhance the heat exchange capacity of the internal and external environments of the radiator, the inner cavity of the radiator is communicated with the fins, and most of the heat is directly subjected to convection heat dissipation with the outside air. The inner cavity of the base plate of the radiator is communicated with the fins, heat can be transferred to the fins from the radiator, and then the fins and outside air carry out convection heat dissipation, so that the heat dissipation process is short in time, free of isolation and high in heat dissipation efficiency.

The LED lamp radiator manufactured after the optimized design is subjected to experiment, and the temperature is 15 ℃ lower than the same specific temperature under the same radiating area; and under the same temperature, the heat dissipation area is reduced by about 20 percent. The radiator after the optimized design has greatly improved the heat dissipation environment of LED lamps and lanterns, has improved the radiating efficiency, and lamps and lanterns life obviously prolongs.

Drawings

The invention will be explained in more detail below with the aid of exemplary embodiments which are illustrated schematically in the drawings, in which:

fig. 1 shows a front view of the LED lamp heat sink of the present invention;

FIG. 2 is a sectional view taken along line A-A of the LED lamp heat sink of the present invention;

FIG. 3 is a structural effect diagram of the LED lamp radiator of the present invention;

FIG. 4 is an isometric view of the LED lamp heat sink of the present invention;

in fig. 1: 100 is an LED lamp radiator, 1 is a substrate, 2 is a radiating fin, 3 is a cover plate, 4 is a reinforcing rib, 5 is a hollow structure, and 6 is a protrusion.

Detailed Description

Fig. 1-4 show specific embodiments of the heat sink of the LED lamp according to the present invention, and the present invention will be further described with reference to the accompanying drawings.

Fig. 1 shows a front view of the present LED heat sink, showing an LED luminaire heat sink 100 having: the cylindrical substrate 1, the tube wall of the substrate 1 is spoke-shaped and extends at least one group of heat dissipation fins 2, the heat dissipation fins 2 and the tube wall of the substrate 1 are integrally formed, the heat dissipation fins 2 are rectangular or square, and the direction of one side of each heat dissipation fin 2 is the axis direction of the tube wall of the substrate 1.

In order to increase the convection of the heat dissipation air, the cylinder wall of the substrate 1 of two adjacent heat dissipation fins 2 is a hollow structure 5.

The bottom of the base plate is a circular cover plate 3 with reinforcing ribs 4 for fixing the lamp holder or the mounting part.

In order to increase the heat dissipation area of the heat dissipation fins, the heat dissipation fins 2 are provided with protrusions 6.

The LED radiator substrate 1 and the radiating fins 2 are integrally extruded and formed, then are processed into a vertical convection radiating three-dimensional structure, aluminum materials with high heat conductivity coefficients are used as radiator materials, and the inner cavity of the radiator is communicated with the fins.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An LED lamp heat sink having: a cylindrical substrate, characterized in that: the outer side of the cylinder wall of the substrate is in a spoke shape, at least one group of radiating fins extends, the radiating fins and the cylinder wall of the substrate are integrally formed, the radiating fins are rectangular or square, and the direction of one side of each radiating fin is the axis direction of the cylinder wall of the substrate.

2. The LED lamp heat sink of claim 1, wherein: the radiating fins are at least two, and the substrate cylinder walls of the two adjacent radiating fins are hollow structures.

3. The LED lamp heat sink of claim 1, wherein: the cylinder bottom of the base plate is provided with a circular cover plate with reinforcing ribs.

4. The LED lamp heat sink of any one of claims 1-3, wherein: the radiating fins are provided with protrusions.