TWM458518U - LED lamp and heat-dissipation structure thereof - Google Patents

Description

Light-emitting diode lamp and heat dissipation structure thereof

This creation is about light-emitting diode lamps, especially a light-emitting diode lamp with heat conduction through a heat pipe and its heat dissipation structure.

With the advancement of the light-emitting diode technology, the light-emitting diodes with larger light-emitting power are also used in daily lighting applications (lamps), so the heat-dissipating problem of the light-emitting diode lamps is also paid more attention. In general, the light-emitting diode lamp has a heat-dissipating means for disposing the light-emitting diode on a metal heat-conducting base, and transferring the heat energy generated by the light-emitting diode to the heat-conducting base, and by using the heat-conducting base. A metal fin is placed on the seat to dissipate heat.

Since the heat transfer efficiency of metal has its congenital upper limit, even if the heat transfer efficiency is improved by changing the geometry of the heat-conducting base and the metal fin, the improvement is still quite limited. Therefore, the heat dissipation method of metal heat conduction alone faces the future light-emitting two. The increasing luminous power of the polar body is inevitably insufficient.

In view of this, the creator has made great efforts to solve the above problems by focusing on the above-mentioned prior art, and has devoted himself to the application of the theory, that is, the goal of the creator's improvement.

One of the aims of the present invention is to provide a heat dissipation structure of a light-emitting diode lamp that is thermally conducted by a heat pipe.

In order to achieve the above object, the present invention provides a heat dissipation structure of a light-emitting diode lamp, which comprises a hollow cylinder seat, a plurality of fins, a heat conducting block and a heat pipe. One end of the hollow cylinder seat is a first end. The plurality of fins are radially arranged on the outer peripheral wall of the hollow cylinder seat, and one end of each fin is vertically bent to form a heat conducting plate, and the heat conducting plates surround the first end portion. The heat conducting block is disposed at the first end of the hollow cylinder seat and protrudes from the first end to form a boss. One end of the heat pipe is connected to the boss, and the other end of the heat pipe extends and is attached to at least one heat conducting plate.

Preferably, in the heat dissipation structure of the above-mentioned light-emitting diode lamp, the heat-conducting plates are arranged on the same plane, and the heat pipe extends in the same plane as the heat-conducting plates.

Preferably, in the heat dissipation structure of the light-emitting diode lamp, the heat-conducting plates are arranged one after another, and the boss forms a contact surface, and the contact surface is parallel to the heat-conducting plate and protrudes from the heat-conducting plate.

Preferably, in the heat dissipation structure of the foregoing light-emitting diode lamp, the heat pipe is buried in the boss.

Preferably, in the heat dissipation structure of the foregoing light-emitting diode lamp, the heat pipe is embedded in the boss.

Another object of the present invention is to provide a light-emitting diode lamp that is thermally conductive by a heat pipe.

In order to achieve the above object, the present invention further provides a light-emitting diode lamp comprising a hollow cylinder block, a plurality of fins, a heat conducting block, a heat pipe and a circuit board. The hollow cartridge seat has a first end. The plurality of fins are radially arranged on the outer peripheral wall of the hollow cylinder seat, and one end of each fin is vertically bent to form a heat conducting plate, and the heat conducting plates surround the first end portion. The heat conducting block is disposed at the first end of the hollow cylinder seat and protrudes from the first end to form a boss. One end of the heat pipe is connected to the boss, and the other end of the heat pipe extends and is attached to at least one heat conducting plate. The light emitting unit is disposed on the boss, and comprises a circuit board. One side of the circuit board is provided with a plurality of light emitting diodes, and the other side of the circuit board is attached to the boss.

Preferably, in the above-mentioned light-emitting diode lamp, the heat-conducting plates are arranged on the same plane, and the heat pipe extends in the same plane as the heat-conducting plates.

Preferably, in the foregoing light-emitting diode lamp, the heat pipe is buried in the boss.

Preferably, in the foregoing light-emitting diode lamp, the heat pipe is embedded in the boss.

Preferably, in the above-mentioned light-emitting diode lamp, the heat-conducting plates are arranged one after another, and the boss forms a contact surface which is parallel to the heat-conducting plate and protrudes from the heat-conducting plate.

The light-emitting diode lamp and the heat-dissipating structure thereof of the present invention transmit the heat energy generated by the light-emitting diode to the fins and then diverge into the air by the heat pipe, so that the heat dissipation efficiency is better than the conventional technology through the metal conduction. .

100‧‧‧ hollow base
110‧‧‧First end
120‧‧‧second end
200‧‧‧Fins
210‧‧‧heat transfer board
220‧‧‧ Missing slot
300‧‧‧thermal block
310‧‧‧Boss
311‧‧‧Contact surface
312‧‧‧Inlay
313‧‧‧through holes
400‧‧‧heat pipe
410‧‧‧Evaporation end
420‧‧‧condensing end
500‧‧‧Lighting unit
510‧‧‧ circuit board
520‧‧‧Lighting diode
600‧‧‧ lamp holder
610‧‧‧ threaded teeth
620‧‧‧Wire
700‧‧‧Transparent cover

The first figure is a perspective exploded view of the heat dissipation structure of the light-emitting diode lamp of the first embodiment of the present invention.

The second figure is a perspective view of the heat dissipation structure of the light-emitting diode lamp of the first embodiment of the present invention.

The third figure is a cross-sectional view of the heat dissipation structure in the second figure.

The fourth figure is a schematic diagram of the light-emitting diode lamp of the second embodiment of the present invention.

The fifth figure is a perspective view of the light-emitting diode lamp of the third embodiment of the present invention.

The sixth figure is a cross-sectional view of the light-emitting diode lamp in the fifth figure.

Referring to the first to third figures, the first embodiment of the present invention provides a heat dissipation structure for a light-emitting diode lamp, comprising a hollow cylinder block 100, a plurality of fins 200, a heat conducting block 300, and two heat pipes 400.

In the present embodiment, the hollow cylinder base 100 is preferably a two-end open metal hollow cylinder. One end of the hollow cylinder base 100 is a first end portion 110, and the other end is a second end portion. 120.

The plurality of fins 200 are radially arranged on the outer peripheral wall of the hollow cylinder block 100. One end of each of the fins 200 is vertically bent in an L shape, thereby forming a heat conducting plate 210. The heat conducting plate 210 is disposed at the first end portion 110 of the hollow cylinder block 100. The heat conducting plates 210 are arranged on the same plane and are arranged at the edge of the first end portion 110. Preferably, the adjacent two heat conducting plates 210 are adjacent. Connect to each other.

The heat conducting block 300 is substantially cylindrical and coaxially embedded in the first end portion 110 of the hollow cylinder block 100. The heat conducting block 300 protrudes from the lip of the first end portion 110 of the hollow cylinder block 100 to form a boss 310. The boss 310 has a contact surface 311 for arranging the light-emitting diodes. The contact surface 311 is parallel to the heat-conducting plates 210 and protrudes from the heat-conducting plates 210. In the embodiment, two mutually parallel cavities 312 are preferably formed on the contact surface 311 of the heat conducting block 300.

In this embodiment, each of the heat pipes 400 is preferably a flat tube, and the two ends of each heat pipe 400 are an evaporation end 410 and a condensation end 420, respectively. The evaporation end 410 of the heat pipe 400 is connected to the boss 310. In this embodiment, the evaporation end 410 of the heat pipe 400 is preferably embedded in the recess 312 of the heat conducting block 300, and the condensation end 420 is along the evaporation end 410. The heat conducting plates 210 extend in an arc shape and are attached to the respective heat conducting plates 210 extending therefrom. However, the present creation does not limit the number of heat pipes 400 and the manner in which they are extended.

The heat dissipating structure of the embodiment is configured to emit thermal energy generated by the LEDs disposed thereon to the air, and absorb the heat energy emitted by the LEDs through the contact surface 311 of the heat conducting block 300. The heat pipe 400 is transferred to each of the fins 200, and further radiates heat into the air through the fins 200.

Referring to the fourth embodiment, a second embodiment of the present invention provides a heat dissipation structure of a light-emitting diode lamp, which comprises a hollow cylinder block 100, a plurality of fins 200, a heat conducting block 300 and two heat pipes 400. The present embodiment is as large as the foregoing first embodiment, and the same points are not described herein. The difference between the present embodiment and the first embodiment is that the side surface of the boss 310 runs through the parallel contact surface 311. Two mutually parallel through holes 313 are opened, and preferably the position of the through holes 313 protrudes from the heat conducting plate 210; the evaporation end 410 of each heat pipe 400 has a round tubular shape and the condensation end 420 has a flat tubular shape, and the heat pipes 400 are The evaporation ends 410 are respectively buried in one of the through holes 313 of the boss 310.

Referring to the fifth and sixth figures, a third embodiment of the present invention provides a light-emitting diode lamp, comprising a hollow cylinder block 100, a plurality of fins 200, a heat-conducting block 300, two heat pipes 400, and a light-emitting unit 500. A lamp cap 600 and a light transmissive cover 700.

The hollow cylinder base 100 is preferably a metal cylindrical body with two ends open. The hollow cylinder base 100 has a first end portion 110 at one end and a second end portion 120 at the other end.

The plurality of fins 200 are radially arranged on the outer peripheral wall of the hollow cylinder block 100. One end of each of the fins 200 is vertically bent in an L shape, thereby forming a heat conducting plate 210. The heat conducting plate 210 is disposed at the first end portion 110 of the hollow cylinder block 100. The heat conducting plates 210 are arranged on the same plane and are arranged at the edge of the first end portion 110. Preferably, the adjacent two heat conducting plates 210 are adjacent. Connect to each other. In this embodiment, each of the fins 200 preferably has a notch 220 at its edge.

The heat conducting block 300 is substantially cylindrical and coaxially embedded in the first end portion 110 of the hollow cylinder block 100. The heat conducting block 300 protrudes from the lip of the first end portion 110 of the hollow cylinder block 100 to form a boss 310. The boss 310 has a contact surface 311 for arranging the light-emitting diodes. The contact surface 311 is parallel to the heat-conducting plates 210 and protrudes from the heat-conducting plates 210. In the embodiment, two mutually parallel cavities 312 are preferably formed on the contact surface 311 of the heat conducting block 300.

Each heat pipe 400 is preferably a flat tube. The two ends of each heat pipe 400 are an evaporation end 410 and a condensation end 420, respectively. The evaporation end 410 of the heat pipe 400 is connected to the boss 310. In this embodiment, the evaporation end 410 of the heat pipe 400 is preferably embedded in the recess 312 of the heat conducting block 300, and the condensation end 420 is along the evaporation end 410. The heat conducting plates 210 extend in an arc shape and are attached to the respective heat conducting plates 210 extending therefrom. However, the present creation does not limit the number of heat pipes 400 and the manner in which they are extended.

The light emitting unit 500 is disposed on the boss 310 and includes a circuit board 510 which is preferably locked to the contact surface 311 of the boss 310 by screws. One side of the circuit board 510 is provided with a plurality of light emitting diodes 520, and the other side of the circuit board 510 is attached to the contact surface 311.

The base 600 is axially disposed through the second end 120 of the hollow cylinder block 100 and protrudes from the second end 120 of the hollow cylinder block 100. The outer wall of the lamp cap 600 is provided with a thread 610 for screwing to a general lamp socket and electrically connected to the mains power source. The lamp cap 600 is electrically connected to the circuit board 510, and is preferably electrically connected to the circuit board 510 by the wire 620 passing through the inside of the hollow cylinder block 100 (but the present invention does not limit the electrical connection manner), thereby using the circuit board The light emitting diode 520 on the board 510 is powered to cause the light emitting diode 520 to emit light.

The translucent cover 700 is preferably a hemispherical transparent cover which may be made of glass or plastic. The transparent cover 700 is shielded from the circuit board 510 to protect the light-emitting diode 520 on the circuit board 510, and can also prevent the user from accidentally touching the high-temperature light-emitting diode 520. The edge of the light transmissive cover 700 is preferably fastened in the notch 220 of each fin 200 to fix its position.

In this embodiment, the heat conducting block 300 of the light emitting diode lamp is not embedded with the heat pipe 400, and may be, for example, a buried connection method as described in the foregoing second embodiment (see also the fourth figure). The evaporation end 410 of each heat pipe 400 may also have a round tubular shape and its condensation end 420 may have a flat tubular shape. Corresponding to the evaporation end 410 of each heat pipe 400, the side surface of the boss 310 is provided with two mutually parallel through holes 313 in the direction of the parallel contact surface 311, and preferably the position of the through hole 313 protrudes from the heat conduction plate 210. The evaporation ends 410 of the heat pipes 400 are respectively buried in one of the through holes 313 of the boss 310 to connect the heat conducting block 300 and the heat pipe 400.

The light-emitting diode lamp of the present invention and the heat dissipation structure thereof, the heat energy absorbed by the contact surface 311 is transmitted to the fins 200 by the heat pipe 400 and then dissipated into the air, which reduces the heat resistance during heat transfer by the heat pipe 400. . The condensation end 420 of the heat pipe 400 is attached to the heat conduction plate 210 of each of the fins 200, and the surface of the heat pipe 400 has a sufficient contact area with the fins 200 by the surface contact. Therefore, the light-emitting diode lamp of the present invention and the heat dissipation structure thereof have better heat dissipation efficiency by metal conduction heat dissipation than the conventional technology.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the patents of the present invention. Other equivalent variations of the patent spirit using the present invention are all within the scope of the patent.

100‧‧‧ hollow base

110‧‧‧First end

200‧‧‧Fins

210‧‧‧heat transfer board

300‧‧‧thermal block

310‧‧‧Boss

311‧‧‧Contact surface

312‧‧‧Inlay

400‧‧‧heat pipe

410‧‧‧Evaporation end

420‧‧‧condensing end

Claims (10)

A heat dissipation structure of a light-emitting diode lamp, comprising:
a hollow cylinder seat having a first end portion;
a plurality of fins are arranged radially on the outer peripheral wall of the hollow cylindrical seat, and one end of each of the fins is vertically bent to form a heat conducting plate, and the heat conducting plates surround the first end portion;
a heat conducting block disposed at the first end of the hollow cylindrical seat and protruding from the first end to form a boss; and a heat pipe, one end of the heat pipe is connected to the boss, and the other end of the heat pipe is extended And attached to at least one of the heat transfer plates. The heat dissipation structure of the light-emitting diode lamp of claim 1, wherein the heat conduction plates are arranged in the same plane, and the heat pipe extends in the same plane as the heat conduction plates. The heat dissipating structure of the illuminating diode lamp of claim 2, wherein the heat conducting plates are arranged one after another, the boss forming a contact surface parallel to the heat conducting plates and protruding the heat conducting plates. The heat dissipation structure of the light-emitting diode lamp of claim 1, wherein the heat pipe is buried in the boss. The heat dissipation structure of the light-emitting diode lamp of claim 1, wherein the heat pipe is embedded in the boss. A light-emitting diode lamp comprising:
a hollow cylinder seat having a first end portion;
a plurality of fins are arranged radially on the outer peripheral wall of the hollow cylindrical seat, and one end of each of the fins is vertically bent to form a heat conducting plate, and the heat conducting plates surround the first end portion;
a heat conducting block disposed at the first end of the hollow cylindrical seat and protruding from the first end to form a boss;
a heat pipe having one end connected to the boss, the other end of the heat pipe extending and attached to at least one of the heat conducting plates; and a light emitting unit disposed on the boss, the light emitting unit comprising a circuit board, the circuit One side of the board is provided with at least one light emitting diode, and the other side of the board is attached to the boss. The illuminating diode lamp of claim 6, wherein the heat conducting plates are arranged in the same plane, and the heat pipe extends in the same plane as the heat conducting plates. The illuminating diode lamp of claim 6, wherein the heat pipe is buried in the boss. The illuminating diode lamp of claim 6, wherein the heat pipe is embedded in the boss. The illuminating diode lamp of claim 7, wherein the heat conducting plates are arranged one after another, the boss forming a contact surface parallel to the heat conducting plates and protruding the heat conducting plates.