CN201206809Y - LED lamps - Google Patents

Abstract

A light-emitting diode lamp, which includes a columnar radiator, a base installed on the lower part of the radiator, and several LED modules surrounding the outer wall of the radiator. The base body is provided with a number of ventilation holes, and a number of heat pipes are connected to the radiator. Compared with the prior art, the light-emitting diode lamp of the utility model has several heat pipes combined with the radiator, which can quickly transmit the heat generated by it to the entire radiator, thereby avoiding the accumulation of heat, and further improving the heat dissipation efficiency of the radiator ; and because the light-emitting diode module is arranged around the outer wall of the radiator, the light can be radiated to the surroundings of the lamp to achieve a better lighting effect.

Description

LED lamps

technical field

The utility model relates to a light-emitting diode lamp, in particular to a light-emitting diode lamp with a cooling device.

Background technique

As an efficient light source, light-emitting diodes have been increasingly used in various fields. However, a large amount of heat is generated when the light-emitting diodes are working. If the heat is not dissipated in time, the light-emitting diodes may be overheated, resulting in a decrease in luminous efficiency.

A traditional LED lamp includes a plate-shaped radiator and several LEDs mounted on one side of the radiator. These light emitting diodes are evenly arranged on several straight lines. When the light-emitting diode is turned on, the heat generated by it is dissipated into the surrounding air through the radiator.

However, in order to obtain a higher luminous intensity, these light-emitting diodes are concentrated in a small area, resulting in uneven heat distribution on the radiator, resulting in heat accumulation, making it unable to effectively exchange heat , which in turn affects the heat dissipation efficiency of the heat sink; and, since these light-emitting diodes are located on the same side of the heat sink, the light emitted by them can only radiate outward from this side of the heat sink, and the light-emitting angle is limited, so they cannot illuminate the lamps at the same time The surrounding area, the lighting effect is not good.

Utility model content

In view of this, it is necessary to provide a light-emitting diode lamp with higher heat dissipation efficiency and better lighting effect.

A light-emitting diode lamp, which includes a columnar radiator, a base installed on the lower part of the radiator, and several LED modules surrounding the outer wall of the radiator. The base body is provided with a number of ventilation holes, and a number of heat pipes are connected to the radiator.

Compared with the prior art, the light-emitting diode lamp of the utility model has several heat pipes combined with the radiator, which can quickly transmit the heat generated by it to the entire radiator, thereby avoiding the accumulation of heat, and further improving the heat dissipation efficiency of the radiator ; and because the light-emitting diode module is arranged around the outer wall of the radiator, the light can be radiated to the surroundings of the lamp to achieve a better lighting effect.

The utility model will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a three-dimensional assembly diagram of the light-emitting diode lamp of the present invention.

FIG. 2 is an exploded perspective view of FIG. 1 .

Fig. 3 is a perspective enlarged view of the radiator in Fig. 2 .

FIG. 4 is a diagram of the air flow in FIG. 1 .

Detailed ways

As shown in Figure 1, the LED lamp of the present invention includes a body (not marked), a heat sink 30 fixed above the body, several LED modules 50 installed on the outside of the heat sink 30, and several stickers. The heat pipe 40 is disposed inside the heat sink 30 and corresponds to the position of the LED module 50 .

Please refer to Fig. 2, the above-mentioned seat body includes a cover body 20 and a lamp cap 10 matched with the cover body 20, the lamp cap 10 includes an annular matching part 12 and a vertically extending downward from the lower part of the matching part 12. A threaded portion 14 . An annular folded edge 16 extends horizontally inwards from the inner wall of the matching portion 12 , and the folded edge 16 and the inner wall of the matching portion 12 together accommodate the corresponding part of the cover 20 therein. The folded edge 16 defines a circular through hole 18 for the wires (not shown) of the LED module 50 to pass through. The outer wall of the threaded portion 14 is provided with several threads, which are used to cooperate with corresponding lamp holders (not shown in the figure) to fix the LED lamps.

The above-mentioned cover body 20 is made of insulating material, and it is used for connecting the lamp cap 10 and the heat sink 30 . The cover 20 includes a substantially bowl-shaped body 22 and an annular wall 24 vertically extending downward from the bottom of the body 22 . The outer side of the annular wall 24 is in contact with the inner side of the mating portion 12 of the lamp cap 10 , and its bottom abuts against the flange 16 of the lamp cap 10 , so that the cover 20 is combined with the lamp cap 10 . The bottom of the body 22 defines an opening 26 through the annular wall 24 for the wires of the LED module 50 to pass through. Three arc-shaped protrusions 28 are formed at equal intervals on the inner wall of the body 22 and located at the opening 26 of the cover 20 . The upper surfaces of the protrusions 28 are flush with the upper surface of the body 22 of the cover 20 , and each protrusion 28 defines a fixing hole 280 perpendicular to the upper surface. Each of the fixing holes 280 runs through the sidewall of the main body 22 , and the diameter of the hole gradually increases from top to bottom for threading of a screw member (not shown in the figure). Several elliptical air holes 220 are evenly opened on the upper part of the side wall of the main body 22 , and these air holes 220 are respectively located between the three protrusions 28 for air flow to pass through.

As shown in FIG. 3 , the heat sink 30 is made of a metal material with better thermal conductivity, and is fixed above the cover 20 . The heat sink 30 includes a hollow regular hexagonal prism (not shown in the figure), which has six identical rectangular outer walls 300 and a circular opening 306 passing through its upper and lower bottom surfaces. The opening 306 is opened in the middle of the prism, extends along the axial direction of the prism and communicates with the opening 26 of the cover 20 , thereby forming the inner wall 302 of the prism. The inner wall 302 is uniformly provided with a plurality of parallel grooves 308 with an arc-shaped cross-section along the axial direction of the prism for inserting the heat pipe 40 . An annular base 32 extends horizontally from the lower part of the radiator 30 , and the opening 306 runs through the middle of the base 32 to form an airflow channel. The bottom surface of the base 32 is in insulating contact with the top surface of the cover 20 . Six rectangular first fins 34 of equal size extend vertically outward from the junction of adjacent outer walls 300 of the prism. The tops of the first fins 34 are flush with the top of the heat sink 30 , and the bottoms are seated on the base 32 upper surface. Each of the first fins 34 extends longitudinally along the outer wall 300 of the prism, and is located at the junction of two adjacent outer walls 300 , so as to be evenly distributed on the outer side of the heat sink 30 . The first fins 34 together with the corresponding outer walls 300 define six areas on the outer side of the heat sink 30 . Three fixing columns 38 protrude vertically upward from the upper surface of the base 32 , and these fixing columns 38 are respectively distributed in three mutually spaced areas and correspond to the protrusions 28 of the cover 20 one by one. A through hole 380 is defined on the upper surface of each fixing column 38 , which communicates with the through hole 280 of the protrusion 28 of the cover 20 , and is used for the threaded rod to pass through, thereby fixing the radiator 30 on the cover 20 . A number of second fins 36 with smaller areas are vertically formed on the upper surface of the base 32 along the longitudinal direction of the outer wall 300 of the prism. Adjacent second fins 36 are in the same area. Both sides of every two adjacent second fins 36 and fixing posts 38 are provided with two through holes 320. The two through holes 320 are located in the same area and penetrate the base 32 up and down for the wires of the LED module 50 to pass through. Pass. The heights of the second fins 36 and the fixing posts 38 are equal and less than the height of the first fins 34, and the inner side thereof is combined with the outer wall 300 of the radiator 30, and the distance from the outer side to the center of the radiator 30 is the same as that of the base 32. equal in diameter.

As shown in Figure 2 again, the LED module 50 is fixed on the outer wall 300 of the radiator 30, and each LED module 50 includes a rectangular circuit board 52 and a number of LEDs evenly fixed on one side of the circuit board 52 54. The light emitting diodes 54 are located on the same straight line extending along the length direction of the circuit board 52 , so that the heat generated by them is evenly conducted to the circuit board 52 . The opposite side of each circuit board 52 is thermally bonded to the outer wall 300 of the heat sink 30 so that each LED module 50 is located in a corresponding area. The light-emitting diode module 50 is fixed above the fixed column 38 along the axial direction of the heat sink 30, and its wires pass through the through holes 320, 26, 18 of the heat sink 30, the cover body 20, and the lamp cap 10 in sequence, so as to communicate with the heat pipe 40, The heat sink 30 , the lamp cap 10 , and the cover 20 together constitute the aforementioned light emitting diode lamp.

The heat pipes 40 are embedded in the corresponding grooves 308 of the radiator 30 parallel to each other, and are evenly distributed on the inner wall 302 of the radiator 30 along the axial direction of the radiator 30, so as to evenly spread the heat generated by the LED module 50 to the entire Radiator 30.

As shown in FIG. 4 , when using the LED lamp, when the LED 54 is powered on, the heat generated by it is conducted to the upper part of the radiator 30 via the circuit board 52 . Since the heat pipe 40 is correspondingly attached to the inner wall 302 of the heat sink 30 , it quickly transfers heat to the entire heat sink 30 , thereby avoiding heat accumulation. Part of the heat flows into the air around the heat sink 30 through the first and second fins 34 , 36 and the fixing posts 38 . The remaining heat is transferred to the air inside the radiator 30 through the inner wall 302 of the radiator 30 and the heat pipe 40, and this part of the air absorbs the heat and expands into hot air with a lower density, which rises through the upper part of the vent 306 of the radiator 30 And leave radiator 30; This moment, the air that is positioned at radiator 30 bottoms moves upwards through the bottom of air hole 220 of cover body 20 and radiator 30 port 306, enters radiator 30 inside; Hot air, thereby continuously achieving air convection, constantly removing heat from the LED lamps.

To sum up, the light-emitting diode lamp of the present invention has several heat pipes 40 attached to the inner wall 302 of the radiator 30, and the positions of the heat pipes 40 and the positions of the light-emitting diode modules 50 correspond to each other, so that the heat generated by them can be transferred rapidly to the entire radiator 30, thereby avoiding the accumulation of heat, and then improving the heat dissipation efficiency of the radiator 30; and because the LED module 50 is arranged around the outer wall 300 of the radiator 30, the light can be radiated to the surroundings of the lamp to achieve a better lighting effects.

Claims (15)

1. A light-emitting diode lamp, characterized in that: it comprises a columnar radiator, a base mounted on the bottom of the radiator, and several LED modules surrounding the outer wall of the radiator, the radiator has upper and lower Through openings, the base body is provided with a number of air holes, and a number of heat pipes are connected to the radiator. 2. The light emitting diode lamp according to claim 1, wherein the heat sink comprises a plurality of outer walls, and the light emitting diode modules are fixed on the corresponding outer walls. 3. The light-emitting diode lamp as claimed in claim 2, wherein the heat sink comprises a prism, and the prism has six outer walls for contacting the light-emitting diode module. 4. The light-emitting diode lamp according to claim 2, wherein the inner wall of the heat sink is provided with a plurality of grooves embedded in the heat pipe, and the above-mentioned light-emitting diode module is arranged opposite to the heat pipe. 5 . The light emitting diode lamp as claimed in claim 2 , wherein a ring-shaped base is formed outwardly from the lower part of the heat sink, and the bottom surface of the base is in contact with the base. 6 . 6. The light-emitting diode lamp as claimed in claim 5, wherein a plurality of first fins are formed at the joints of adjacent outer walls of the heat sink. 7 . The light emitting diode lamp according to claim 6 , wherein the first fins and the outer wall jointly form a plurality of regions, and the above-mentioned light emitting diode modules are correspondingly arranged in the regions. 8 . 8. The light-emitting diode lamp according to claim 7, wherein a plurality of second fins and fixing columns extend upward from the upper surface of the base, and the second fins and fixing columns correspond to the heat sink alternately. Combined outer walls. 9 . The light emitting diode lamp as claimed in claim 8 , wherein at least two second fins are arranged in the same region, and at least one fixing column is arranged in another adjacent region. 10. The light-emitting diode lamp according to claim 8, wherein the top of the first fin is flush with the top of the heat sink, and the height of the second fin and the fixing column is smaller than that of the first fin. height, the LED module is located above the fixing column. 11. The light emitting diode lamp as claimed in claim 8, wherein the first and second fins extend along the longitudinal direction of the outer wall of the heat sink. 12. The light-emitting diode lamp according to any one of claims 8 to 11, characterized in that: the upper surface of the base is also provided with a number of through holes, and the through holes are respectively arranged on the second fins and the fixed fins in each area. both sides of the column. 13. The light emitting diode lamp as claimed in claim 5, wherein the base body comprises a cover body and a lamp cap matched with the cover body, and the upper part of the cover body is in contact with the bottom surface of the base. 14. The light-emitting diode lamp as claimed in claim 13, wherein the cover body comprises a bowl-shaped body, the vent hole is opened on the side wall of the body, and the bottom of the body is opened with a through hole connected to the radiator connected openings. 15. The light-emitting diode lamp according to claim 14, wherein the cover body further comprises a plurality of protrusions protruding inward from the inner wall of the main body, and the above-mentioned ventilation holes are arranged between the protrusions.

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