CN218237104U

CN218237104U - LED light source with high-efficient thermal diffusivity

Info

Publication number: CN218237104U
Application number: CN202122693270.3U
Authority: CN
Inventors: 陈小宁
Original assignee: Hengtai Industrial Technology Shenzhen Co ltd
Current assignee: Hengtai Industrial Technology Shenzhen Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2023-01-06
Anticipated expiration: 2031-11-04

Abstract

An LED light source with high-efficiency heat dissipation performance comprises a lampshade, LED chips and a lamp barrel, wherein the lamp barrel is hollow and cylindrical, a stand column is arranged at the center of the lamp barrel, the inner wall of the lamp barrel is connected with the stand column through a plurality of heat dissipation fins arranged at intervals, and a straight barrel-shaped chimney channel is formed between any two adjacent heat dissipation fins; the lamp shade is annularly arranged around the peripheral surface of the lamp barrel, the top of the lamp barrel is sleeved with an upper end opening of the lamp shade, and the bottom of the lamp barrel is sleeved with a lower end opening of the lamp shade. The utility model discloses a heat that the LED light source during operation produced is transmitted for a lamp section of thick bamboo by the LED chip, radiating fin and stand, the air heat absorption in each straight tube-shape chimney passageway in the lamp section of thick bamboo, the temperature rises, the density descends, form the density difference with the air at both ends about the lamp section of thick bamboo, produce buoyancy, take the straight tube-shape chimney passageway of heat from the top discharge, the negative pressure that produces in the lamp section of thick bamboo can make new cold air enter into straight tube-shape chimney passageway from the below again, and the cycle is repeated, form the chimney effect, the heat transfer intensity under the natural convection has been improved.

Description

LED light source with high-efficient thermal diffusivity

Technical Field

The utility model relates to a LED lamps and lanterns field, concretely relates to LED light source with high-efficient thermal diffusivity.

Background

The LED is a fourth generation illumination light source by virtue of the advantages of quick response, environmental protection, long service life, light distribution design diversity and the like. However, due to the limitations of the current semiconductor manufacturing process, the photoelectric conversion efficiency of the LED can only reach about 20%, and the other 80% of the energy is converted into useless heat energy. If this energy is not dissipated in time, it will cause the junction temperature of the LED to rise, thereby reducing the lifetime of the LED.

Therefore, the search for a better heat dissipation mode becomes a research hotspot of the LED lamp.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a LED light source with high-efficient thermal diffusivity to the photoelectric conversion efficiency of solving prior art's LED is low, and most energy leads to LED's junction temperature to rise, thereby has shortened the technical problem in LED life-span.

In order to achieve the above object, the utility model provides a LED light source with high-efficient thermal diffusivity, it includes lamp shade, LED chip and a lamp section of thick bamboo, wherein:

the lamp tube is hollow and cylindrical, the center of the lamp tube is provided with a stand column, the inner wall of the lamp tube is connected with the stand column through a plurality of radiating fins arranged at intervals, and a straight tube-shaped chimney channel is formed between any two adjacent radiating fins;

the LED lamp comprises a lamp tube, a lamp shade, a plurality of LED chips and a lamp tube, wherein the lamp shade is annularly arranged around the periphery of the lamp tube, the top of the lamp tube is sleeved with an upper end opening of the lamp shade, the bottom of the lamp tube is sleeved with a lower end opening of the lamp shade, a light emitting cavity is formed between the lamp shade and the outer wall of the lamp tube, and the LED chips are distributed in the light emitting cavity in an array mode and are arranged on the outer wall of the lamp tube.

As the utility model discloses a further preferred technical scheme, a lamp section of thick bamboo, stand and radiating fin integrated into one piece.

As the utility model discloses a further preferred technical scheme, a lamp section of thick bamboo, stand and radiating fin's material is aluminum alloy or copper alloy, the lamp shade is glass, plastic or ya keli of light-permeable material.

As a further preferred technical scheme of the utility model, radiating fin centers on the stand is evenly laid.

As a further preferred technical scheme of the utility model, the quantity of radiating fin is 4-20 pieces.

As a further preferred technical scheme of the utility model, the upper end of a lamp section of thick bamboo still is equipped with the fan, the top coaxial arrangement of stand has the bearing, the fan passes through the bearing and rotatably installs on the stand, the radius of fan is not more than the radius of the inner chamber of a lamp section of thick bamboo.

As a further preferred technical scheme of the utility model, the top or the bottom of a lamp section of thick bamboo are equipped with the lighting fixture, the lighting fixture with a lamp section of thick bamboo is connected and is not sheltered from the upper portion or the lower part opening of a lamp section of thick bamboo.

The utility model discloses a LED light source with high-efficient thermal diffusivity, be hollow cylinder with a lamp section of thick bamboo design, a lamp section of thick bamboo forms the radiator rather than inside radiating fin and stand, and form independent straight tube-shape chimney passageway in its inside, the heat that produces when LED light source during operation transmits for a lamp section of thick bamboo by the LED chip, radiating fin and stand, the air endotherm in each straight tube-shape chimney passageway in the lamp section of thick bamboo, the temperature rises, density descends, form the density difference with the air at both ends about the lamp section of thick bamboo, thereby produce buoyancy, take the straight tube-shape chimney passageway of heat follow top discharge, the negative pressure that produces in the lamp section of thick bamboo can make new cold air enter into straight tube-shape chimney passageway from the below again, so go round and go round, form chimney effect, the heat transfer intensity under the natural convection has just so been improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic perspective view of an example of an LED light source with high heat dissipation performance according to the present invention;

FIG. 2 is a schematic cross-sectional view of an LED light source with high heat dissipation efficiency;

fig. 3 is a schematic structural view of the middle lamp tube of the present invention.

In the figure: 1. the LED lamp comprises a lampshade, 2, a lamp barrel, 3, radiating fins, 4, a stand column, 5 and an LED chip.

The purpose of the present invention is to provide a portable electronic device, which can be easily and conveniently operated.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.

As shown in fig. 1-3, the utility model provides a LED light source with high-efficient thermal diffusivity, including lamp shade 1, LED chip 5 and lamp section of thick bamboo 2, wherein:

the lamp tube 2 is hollow cylindrical, the center of the lamp tube is provided with a stand column 4, the inner wall of the lamp tube 2 is connected with the stand column 4 through a plurality of radiating fins 3 arranged at intervals, and a straight-tube chimney channel is formed between any two adjacent radiating fins 3;

the LED lamp comprises a lamp shade 1, a lamp barrel 2, a light-emitting cavity and a plurality of LED chips 5, wherein the lamp shade 1 is annularly arranged around the peripheral surface of the lamp barrel 2, the top of the lamp barrel 2 is sleeved with an upper end opening of the lamp shade 1, the bottom of the lamp barrel 2 is sleeved with a lower end opening of the lamp shade 1, the lamp shade 1 is sleeved with the outer wall of the lamp barrel 2 to form the light-emitting cavity, and the LED chips 5 are distributed in the light-emitting cavity in an array mode and are installed on the outer wall of the lamp barrel 2.

The heat generated by the LED light source during working is transmitted to the lamp barrel 2, the radiating fins 3 and the upright post 4 by the LED chip 5, the air in each straight barrel-shaped chimney channel in the lamp barrel 2 absorbs heat, the temperature rises, the density drops, and the air at the upper end and the lower end of the lamp barrel 2 form a density difference, so that buoyancy is generated, the heat is driven to be discharged out of the straight barrel-shaped chimney channels from the upper part, the negative pressure generated in the lamp barrel 2 can enable new cold air to enter the straight barrel-shaped chimney channels from the lower part, and the chimney effect is formed in the same cycle, and the heat exchange strength under natural convection is improved.

In a concrete implementation, a lamp section of thick bamboo 2, stand 4 and radiating fin 3 integrated into one piece, the three is integrative and be the heat dissipation material, is favorable to thermal quick transmission, and the heat that LED chip 5 during operation produced promptly can be driven to stand 4 and radiating fin 3 through a lamp section of thick bamboo 2 fast to accelerated the cooling to LED chip 5.

Preferably, the lamp barrel 2, the upright post 4 and the heat dissipation fins 3 are made of aluminum alloy or copper alloy, and the lampshade 1 is made of light-permeable glass, plastic or acrylic. Of course, in the specific implementation, the lamp barrel 2, the upright post 4, the heat dissipating fin 3 and the lamp shade 1 may be made of other materials, which is not illustrated here.

In another specific implementation, the heat dissipation fins 3 are uniformly distributed around the column 4, the number of the heat dissipation fins 3 is 4-20, and preferably, the number of the heat dissipation fins 3 is 12, because when the number of the heat dissipation fins 3 is less than 12, the area for exchanging heat with air increases with the increase of the heat dissipation fins 3, so that the chimney effect is improved, the heat dissipation capability is increased, and the temperature is rapidly reduced with the increase of the heat dissipation fins 3; when the number of the radiating fins 3 is increased to more than 12, the distance between the radiating fins 3 becomes smaller gradually, which is not beneficial to the air flow, and the rapid and smooth natural convection cannot be formed, but the convection heat transfer coefficient is reduced, the strength of the chimney effect is weakened, and the radiating effect is influenced.

Preferably, the upper end of the lamp tube 2 is further provided with a fan, a bearing is coaxially installed at the top of the stand column 4, the fan is rotatably installed on the stand column 4 through the bearing, the radius of the fan is not greater than that of the inner cavity of the lamp tube 2, and the fan blades of the fan can be driven to rotate in the upward flowing process of air in the straight tube-shaped chimney channels, so that a dynamic ornamental effect is provided for static light, and meanwhile, the air flow of each straight tube-shaped chimney channel can be more uniform and smooth under the disturbance effect of the fan blades, so that the overall cooling effect is more uniform.

In another embodiment, a lamp holder is disposed on the top or bottom of the lamp cylinder 2, and the lamp holder is connected to the lamp cylinder 2 and does not block the upper or lower opening of the lamp cylinder 2, and the lamp holder is used for supporting the whole LED light source, so that the LED light source can be placed on a table or hung on a wall.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. The utility model provides a LED light source with high-efficient thermal diffusivity which characterized in that, includes lamp shade, LED chip and a lamp section of thick bamboo, wherein:

2. The LED light source with high heat dissipation efficiency as recited in claim 1, wherein the lamp barrel, the pillar and the heat dissipation fins are integrally formed.

3. The LED light source with high heat dissipation efficiency as recited in claim 1, wherein the lamp barrel, the pillar and the heat dissipation fins are made of aluminum alloy or copper alloy, and the lamp cover is made of transparent glass, plastic or acrylic.

4. The LED light source with high heat dissipation efficiency as recited in claim 1, wherein the heat dissipation fins are uniformly distributed around the pillars.

5. The LED light source with high heat dissipation efficiency as recited in claim 4, wherein the number of the heat dissipation fins is 4-20.

6. The LED light source with high heat dissipation efficiency as recited in claim 1, wherein a fan is further disposed at an upper end of the lamp barrel, a bearing is coaxially mounted at a top of the pillar, the fan is rotatably mounted on the pillar through the bearing, and a radius of the fan is not larger than a radius of the inner cavity of the lamp barrel.

7. The LED light source with high heat dissipation efficiency as recited in any one of claims 1 to 6, wherein a lamp holder is disposed on a top or bottom of the lamp cylinder, and the lamp holder is connected to the lamp cylinder without covering an upper or lower opening of the lamp cylinder.