WO2008138231A1

WO2008138231A1 - Led lamp of highly efficient heat dissipation

Info

Publication number: WO2008138231A1
Application number: PCT/CN2008/000957
Authority: WO
Inventors: Jie She
Original assignee: Jie She
Priority date: 2007-05-16
Filing date: 2008-05-16
Publication date: 2008-11-20
Also published as: CN101307891A; WO2008138177A1

Abstract

A LED lamp of highly efficient heat dissipation comprises a PCB install board, a PCB circuit board, a LED light source and lens. One LED electrical equipment cavity, an open-type heat dissipation cavity and a LED lighting cavity are set on the lamp body separately. The LED electrical equipment cavity is consisted of an upside cover board, the PCB circuit board and the PCB install board. Some grid ribs, on the upside of the open-type heat dissipation body, are made up of the open-type heat dissipation cavity. There are some LED lead perforations and LED holding holes at the down surface of the open-type heat dissipation body. The LED lightingcavity is consisted of the open-type heat dissipation body, the LED light source, the lens, a LED substrate, a lamp cover and a downside cover board.

Description

Efficient heat dissipation LED lamps

Technical field

The utility model relates to a high-power LED lamp, in particular to an array type high-power LED lamp with high heat dissipation. Background technique

LEDs have the advantages of low energy consumption, low heat generation and long service life, which can be used to replace traditional light sources. Considering that the luminance of a single LED is insufficient, LED lamps generally use a plurality of LEDs arranged in an array, thereby causing a problem that heat dissipation of high-power LED lamps is difficult.

The heat dissipation technology used in the high-power LED lamps in the prior art is mostly indirect heat dissipation, and the heat dissipation effect is not good. In the Chinese Patent Publication No. CN2557805Y, a high-power LED lamp is disclosed. In this solution, a plurality of LED dies 1 are mounted on a high thermal conductivity substrate 2, and the substrate 2 is closely coupled to a heat sink 3. Contact, thereby dissipating heat from the plurality of LED dies 1. However, in this solution, all of the LED dies are guided to the driver 6 through the common conductive lead 10 via the common conductive lead 10, so that the air flow is not smooth, the heat dissipation is not good, and even the fan 11 needs to be added. Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide an LED lamp with high heat dissipation, which has better heat dissipation effect, low energy consumption, long service life and small attenuation of light energy.

In order to achieve the object of the present invention, the following technical solutions are adopted:

An LED lamp with high efficiency heat dissipation, comprising an electrical cavity cover, a PCB circuit board, a PCB mounting plate, an open heat sink, at least one LED light source component unit and a light transmissive cover plate; each LED light source component unit comprises a single LED light source, Lens and two #_ conductive leads;

Wherein, the electrical cavity cover and the PCB mounting plate are connected to each other to form a sealed electrical cavity I; the PCB circuit board is disposed in the electrical cavity I;

The open heat dissipating body includes a heat dissipating plate, and one side of the heat dissipating plate is provided with a plurality of heat conducting ribs, and an upper portion of the heat conducting rib and the PCB mounting plate are connected to each other to form an open heat dissipating cavity II;

The transparent cover plate and the heat dissipation plate of the open heat sink are connected to each other to form a closed LED illumination cavity III; the at least one LED light source is disposed in the LED illumination cavity III; The other side of the heat dissipation plate opposite to the heat conducting rib is provided with a plurality of LED wire perforations, and each LED light source corresponds to two LED wire perforations;

The plurality of heat conducting ribs includes a plurality of hollow wire struts, each of the hollow wire struts for accommodating only one conductive lead of the LED light source assembly unit, each of the hollow wire struts directly communicating with the outside air Contacting; having a plurality of wire perforations corresponding to the LED wire perforations on the PCB mounting plate, each of the conductive leads of each of the LED light source assembly units passing through a hollow wire on a heat dissipation plate of the open heat sink The struts, and through the wire perforations on the PCB mounting board, are connected to the PCB circuit board to make electrical connections to the corresponding electronic components.

The technical solution of the utility model can also be:

An efficient heat dissipation LED lamp, comprising an electrical cavity cover, a PCB circuit board, an open heat sink, at least one LED light source component unit and a light transmissive cover plate; each LED light source component unit comprises a single LED light source, a lens and two Conductive lead

Wherein, the electrical cavity cover and the PCB circuit board are connected to each other to form a sealed electrical cavity I; and a circuit is directly printed on the PCB circuit board inside the electrical cavity I;

The open heat sink includes a heat dissipation plate, and one side of the heat dissipation plate is provided with a plurality of heat conduction ribs, and an upper portion of the heat conduction rib and another side of the PCB circuit board are connected to each other to form an open heat dissipation cavity. II;

The light-transmissive cover plate and the heat-dissipating plate of the open heat-dissipating body are connected to each other to form a sealed LED illumination cavity III; the at least one LED light source is disposed in the LED illumination cavity III;

The other side of the heat dissipation plate opposite to the heat conducting rib is provided with a plurality of LED wire perforations, and each LED light source corresponds to two LED wire perforations;

The plurality of heat conducting ribs includes a plurality of hollow wire struts, each hollow wire struts for accommodating only one conductive lead of the LED light source assembly unit, each hollow wire strut directly contacting the outside Air contact; on the PCB circuit board, there are a plurality of wire perforations corresponding to the LED wire perforations, and each of the conductive leads of each of the LED light source component units passes through a hollow plate on the heat dissipation plate of the open heat sink The wire struts are pierced through the wires on the PCB circuit board and connected to the PCB circuit board to make electrical connections to the corresponding electronic components.

The high-efficiency heat-dissipating LED lamp of the utility model adopts a three-chamber structure, and the structure thereof is reasonable and compact, the manufacturing is easy, and the heat dissipation effect is good. Specifically, the present invention has the following advantages: (1) Efficient heat dissipation: transferring heat generated by the LED light source into the open heat sink; a plurality of heat conductive ribs are disposed on one side of the heat sink of the open heat sink, and the plurality of heat conductive ribs include a plurality of hollow Wire struts, each of the hollow wire struts is for accommodating only one conductive lead of the LED light source assembly unit, and each hollow wire strut is directly in contact with outside air; the open heat sink is exposed to the air, The outside natural wind convects the hot air in the open heat dissipation cavity and the cold air outside by the gap between the plurality of staggered grid-shaped heat conduction bars on the open heat radiator, and quickly maximizes the heat generated by the LED light source. Emitted to achieve efficient heat dissipation.

(2) The heat generated by the electrical cavity does not affect the luminous efficiency and life of the light source: The LED lamp designed by the three-cavity structure design method enables spatial isolation between the LED electrical cavity portion and the LED illumination cavity portion, so that The working environments of the two cavities do not affect each other, and the heat generated by the LED electric cavity part and the LED lighting cavity part does not form a superposition, so the cooling effect is realized by the reasonable arrangement of the space structure, and the LED is further extended. The life of the luminaire and the constant illuminating effect are maintained. Description

1 is a schematic structural view of a vertical cross section of Embodiment 1 of an LED lamp for efficient heat dissipation of the present invention. FIG. 1 is a schematic diagram of lateral heat conduction and air convection of the LED lamp shown in FIG. 1. FIG. 2 is an LED of FIG. Schematic diagram of the structure of the luminaire;

3 is a schematic structural view of a vertical longitudinal section of the LED lamp shown in FIG. 1;

3a is a schematic diagram of the heat conduction principle of the vertical longitudinal section of the LED lamp shown in FIG. 1; FIG. 3b is a schematic diagram of the air convection principle of the horizontal section of the LED lamp shown in FIG.

4 is a schematic structural view of Embodiment 2 of the LED lamp of the present invention for efficiently dissipating heat;

FIG. 5 is a schematic structural view of Embodiment 3 of the LED lamp of the present invention for efficiently dissipating heat; FIG.

6 is a schematic structural view of Embodiment 4 of the LED lamp of the present invention for efficiently dissipating heat;

7 is a schematic structural view of Embodiment 5 of the LED lamp of the present invention for efficiently dissipating heat;

8 is a schematic structural view of Embodiment 6 of the LED lamp of the present invention for efficiently dissipating heat;

9 is a schematic structural view of Embodiment 7 of the LED lamp of the present invention for efficiently dissipating heat;

10 is a schematic structural view of Embodiment 8 of the LED lamp of the present invention for efficiently dissipating heat;

11 is a schematic structural view of Embodiment 9 of the LED lamp of the present invention for efficiently dissipating heat; FIG. 12 is a schematic structural view of Embodiment 10 of the LED lamp of the present invention for efficiently dissipating heat.

In the figure: 1 is the upper cover, 2 is the PCB circuit board, 3 is the PCB mounting board, 4 is the LED wire perforation, 5 is the LED receiving hole, 6 is the open heat sink, 7 is the LED light source, 8 is the LED base The disc, 9 is a translucent cover, 10 is a lower cover, and 11 is an air deflector.

In Figure la, Figure 3a, Figure 3b: the solid line indicates the direction of heat dissipation, and the dotted line indicates the direction of air convection. detailed description

As shown in FIG. 1, FIG. 2 and FIG. 3, in the first embodiment, the LED lamp with high efficiency heat dissipation is a long street lamp base, including an upper cover 1, 'PCB circuit board 2, PCB mounting board 3, open type The heat sink 6, at least one LED light source unit, the light transmissive cover 9 and the lower cover 10. Each LED light source assembly unit includes a single LED light source 7, a lens, an LED substrate 8 and two conductive leads, the at least one LED light source assembly unit having the same structure and dimensions.

The upper cover 1 and the PCB mounting plate 3 are connected to each other to form a sealed electrical cavity I; the PCB circuit board 2 is disposed in the electrical cavity 1. Wherein, the PCB circuit board 2 can directly supply the working voltage required by the LED light source 7 by using a battery pack, a battery or other power supply device.

The open heat sink 6 includes a heat dissipating plate, and one side of the heat dissipating plate is provided with a plurality of staggered heat conducting ribs, and the upper portion of the heat conducting rib and the PCB mounting plate 3 are connected to each other to form an open heat dissipating cavity II. The heat dissipation plate and the heat conduction rib may be an integrated structure.

The heat dissipation plates of the transparent cover plate 9, the lower cover 10 and the open heat sink 6 are connected to each other to form a closed LED illumination cavity III; the at least one LED light source 7 is disposed in the LED illumination cavity .

The other side of the heat dissipation plate opposite to the heat conducting rib is provided with a plurality of LED wire through holes 4 and a plurality of LED receiving holes 5. Each LED light source 7 corresponds to one LED receiving hole 5 and two LED wire through holes 4; the plurality of LED receiving holes 5 have the same size and are arranged in an array, and the adjacent LED receiving holes 5 are in the lateral direction. Have a consistent spacing with the longitudinal direction. The surface of the heat dissipation plate to which the LED light source 7 is attached may be substantially planar or curved, and each LED light source 7 is attached to a LED receiving hole 5 through the LED substrate 8. Among them, the LED base plate 8 and the teaching hot plate are thermally contacted by a thermal conductive adhesive.

The plurality of thermally conductive ribs includes a plurality of hollow wire struts, each of the hollow wire struts for accommodating only one conductive lead of the LED light source assembly unit, each hollow wire struts directly communicating with outside air contact. Having a plurality of wire perforations corresponding to the LED wire perforations 4 on the PCB mounting board 3, each of which Each of the conductive leads of the LED light source assembly unit passes through a hollow wire post on the heat dissipation plate of the open heat sink 6, and is pierced through a wire on the PCB mounting plate 3, and is connected to the PCB circuit board 2, and correspondingly Electronic components enable circuit connections.

The PCB mounting board 3, the upper cover 1, the open heat sink 6, the LED base 8, and the lower cover 10 are made of a heat conductive material, and the heat conductive material may be an aluminum alloy or a copper alloy or other heat conductive metal alloy.

As shown in Fig. 1 (a;), Fig. 3 (a) and Fig. 3 (b), most of the heat generated by the LED light source 7 is directly conducted into the heat sink of the open heat sink 6 until the open heat sink 6 A plurality of grid-shaped heat conducting ribs on the upper side, the heat dissipation direction is shown by the solid line in the figure. Since the open heat dissipation cavity II of the lamp is directly exposed to the outside air, the outside natural wind passes through the gap between the plurality of staggered grid-shaped heat conduction bars on the open heat sink 6 to realize the inside of the open heat dissipation cavity II. The convection of hot air and cold air from the outside, the direction of air convection is shown by the dotted line in the figure. Therefore, the heat generated by the LED light source 7 is maximally dissipated, thereby achieving an efficient heat dissipation effect.

As shown in FIG. 4, in Embodiment 2, the LED lamp that efficiently dissipates heat is an LED tunnel lamp.

As shown in FIG. 5, in Embodiment 3, the LED lamp that efficiently dissipates heat is an LED spotlight.

As shown in FIG. 6, in Embodiment 4, the LED lamp that efficiently dissipates heat is an LED floodlight.

As shown in FIG. 7, in Embodiment 5, the LED lamp that efficiently dissipates heat is an LED wall washer. .

As shown in Fig. 8, in the embodiment 6, the LED lamp which efficiently dissipates heat is an LED embedded lamp.

As shown in FIG. 9, in Embodiment 7, the LED lamp that efficiently dissipates heat is an LED chandelier.

As shown in Fig. 10, in the eighth embodiment, the LED lamp for efficient heat dissipation is an LED ceiling lamp.

As shown in Fig. 11, in the embodiment 9, the LED lamp which efficiently dissipates heat is an LED cup lamp.

As shown in Fig. 12, in the embodiment 10, the LED lamp which efficiently dissipates heat is an LED car headlight.

In the above embodiment, the LED electrical cavity I and the LED illumination cavity III of the LED lamp for outdoor illumination must have a sealing property inside the cavity to meet the waterproof requirement of IP65 or above; the LED electrical cavity of the LED lamp used for indoor illumination I, LED lighting cavity III, the internal sealing of the cavity must meet the waterproof requirements of IP20 or above.

The above embodiments are typical embodiments of the present invention, and in other different embodiments, different adjustments can be made to the technical solutions.

In the above embodiment, on the other side of the heat dissipation plate opposite to the heat conductive rib, a plurality of LED accommodating holes 5 are provided, each of the LED light sources 7 corresponding to one LED accommodating hole 5, and each of the LED light sources 7 It is attached to one of the LED housing holes 5 through the LED substrate 8. In other embodiments, the LED receiving hole 5 may not be used, but The LED light source 7 is directly attached to the heat dissipation plate.

In the above embodiment, the LED light source 7 is in contact with the open heat sink 6 through the LED base 8. In other embodiments, the LED base 8 may also be omitted, and the LED light source 7 is directly connected to the open heat sink. 6 to achieve contact.

In the above embodiment, the PCB circuit board 2 carrying the circuit is separately provided. In other embodiments, the PCB circuit board 2 and the PCB circuit mounting board 3 may be combined into a single PCB circuit board, and the circuit is covered by a lamination process. Directly printed on the other side of the PCB circuit board opposite to the heat conducting ribs of the open heat sink 6, so that the heat generated by the PCB circuit board and the corresponding electronic components is transmitted to the plurality of the floating heat sinks 6 in the same manner. It has a grid-like heat-conducting rib on the strip, and then achieves efficient heat dissipation by air self-convection.

In addition, in addition to the LED light source 7 and the lens, other means for managing the light may be added thereto.

In addition, the positional relationship between the three chambers of the LED electrical cavity I, the open heat dissipation cavity II, and the LED illumination cavity is not fixed, and the positional relationship can be adjusted according to the specific modeling requirements of the lighting fixture. And change.

Claims

Rights request

1. An efficient heat-dissipating LED lamp, comprising an electrical cavity cover (1), a PCB circuit board (2), a PCB mounting plate (3), an open heat sink (6), at least one LED light source component unit and light transmission a cover plate (9); each LED light source assembly unit comprises a single LED light source (7), a lens and two conductive leads;

Wherein, the electrical chamber cover (1) and the PCB mounting plate (3) are connected to each other to form a closed electrical cavity (I); the PCB circuit board (2) is disposed in the electrical cavity (I) Inside;

The open heat sink (6) includes a heat dissipating plate, and one side of the heat dissipating plate is provided with a plurality of heat conducting ribs, and an upper portion of the heat conducting rib and the PCB mounting plate (3) are connected to each other to form an open type The heat dissipation cavity (II); the heat dissipation plate of the translucent cover plate (9) and the open heat sink (6) are connected to each other to form a closed LED illumination cavity (III); the at least one LED light source (7) Is disposed in the LED illumination cavity III; on the other side of the heat dissipation plate opposite to the heat conducting rib, a plurality of LED wire perforations (4) are provided, and each LED light source (7) corresponds to two LEDs Wire perforation (4);

The plurality of thermally conductive ribs includes a plurality of hollow wire struts, each of the hollow wire struts for accommodating only one conductive lead of the LED light source assembly unit, each hollow wire struts directly communicating with outside air Contacting; having a plurality of wire perforations corresponding to the LED wire through holes (4) on the PCB mounting board (3), each of the conductive leads of each of the LED light source component units passing through the open heat sink ( 6) The hollow wire struts on the heat sink board, and through the wire perforations on the PCB mounting board (3), are connected to the PCB circuit board (2) to make electrical connections with the corresponding electronic components.

2. An efficient heat-dissipating LED lamp, comprising an electrical cavity cover (1), a PCB circuit board, an open heat sink (6), at least one LED light source component unit and a light-transmitting cover plate (9); each LED light source The component unit comprises a single LED light source (7), a lens and two conductive leads;

Wherein, the electrical chamber cover (1) and the PCB circuit board are connected to each other to form a closed electrical cavity (I); and a circuit is directly printed on the PCB circuit board inside the electrical cavity (I);

The open heat sink (6) includes a heat dissipating plate, and one side of the heat dissipating plate is provided with a plurality of heat conducting ribs, and an upper portion of the heat conducting rib and another side of the PCB circuit board are connected to each other to form an open Heat sink (II);

The light-transmitting cover plate (9) and the heat dissipation plate of the open heat sink (6) are connected to each other to form a closed LED illumination cavity (III); the at least one LED light source (7) is disposed in the LED lighting cavity (III); The other side of the heat dissipation plate opposite to the heat conducting rib is provided with a plurality of LED wire through holes (4), and each LED light source (7) corresponds to two LED wire holes (4);

The plurality of thermally conductive ribs includes a plurality of hollow wire struts, each of the hollow wire struts for accommodating only one conductive lead of the LED light source assembly unit, each hollow wire struts directly communicating with outside air Contacting; having a plurality of wire perforations corresponding to the LED wire through holes (4) on the PCB circuit board, each of the conductive leads of each of the LED light source component units passing through the open heat sink (6) The hollow wire struts on the heat sink board, and through the wire perforations on the PCB circuit board, are connected to the PCB circuit board to make electrical connections with the corresponding electronic components.

The high-efficiency heat-dissipating LED lamp according to claim 1 or 2, wherein the LED light source component unit is plural.

The LED lamp of the high-efficiency heat dissipation according to claim 1 or 2, wherein a plurality of LED receiving holes (5) are further disposed on the other side of the heat dissipation plate opposite to the heat conducting ribs, Each LED light source (7) corresponds to one LED receiving hole (5), and each LED light source (7) is attached to one LED receiving hole (5).

The high-efficiency heat-dissipating LED lamp according to claim 4, wherein the plurality of LED accommodating holes (5) have the same size and are arranged in an array, and the adjacent LED accommodating holes (5) There is a uniform spacing in the lateral and longitudinal directions, respectively.

6. The high-efficiency heat-dissipating LED lamp of claim 4, wherein each of the LED light source assembly units further comprises an LED substrate (8) through which each LED light source (7) passes ( 8) Attached to a LED receiving hole ( 5 ).

The high-efficiency heat-dissipating LED lamp according to claim 1 or 2, wherein the heat dissipation plate and the heat-conductive rib are integrated.

The high-efficiency heat-dissipating LED lamp according to claim 1 or 2, further comprising an illumination chamber cover (10), wherein the translucent cover plate (9) passes through the illumination chamber cover (10) The heat sinks of the open heat sink (6) are connected to each other to form a closed LED illumination cavity (III).

9. The high efficiency heat dissipating LED lamp according to claim 1 or 2, wherein the plurality of LED light source unit units have the same structure and size.

The high-efficiency heat-dissipating LED lamp according to claim 1 or 2, wherein the high-efficiency heat-dissipating LED lamp is used for outdoor lighting, and the cavity of the LED electrical cavity (I) and the LED illumination cavity (ΠΙ) The internal airtightness meets the waterproof requirement of IP65 or above. s

The high-efficiency heat-dissipating LED lamp according to claim 1 or 2, wherein the high-efficiency heat-dissipating LED lamp is used for indoor lighting, the cavity of the LED electrical cavity (I) and the LED illumination cavity (III) The airtightness inside the body reaches the waterproof requirement of IP20 or above.