WO2012058804A1

WO2012058804A1 - A heat-dissipating structure for led lamp

Info

Publication number: WO2012058804A1
Application number: PCT/CN2010/078351
Authority: WO
Inventors: 林志泽
Original assignee: Lin Chintse
Priority date: 2010-11-02
Filing date: 2010-11-02
Publication date: 2012-05-10

Abstract

A heat-dissipating structure for LED lamp comprises a heat-dissipating body (2) and at least one heat-conductive column (4). The heat-dissipating body (2) is provided with a blind hole (20) corresponding to the heat-conductive column (4), which is accommodated in the blind hole (20). A plurality of through holes (21) for heat-dissipating are provided through the heat-dissipating body (2) around the heat-conductive column (4). The heat conducted by the heat-conductive column (4) is dissipated from the inner wall of the through holes (21) by convection. The through holes (21) are arranged in a trapezoid shape to enhance the air convection effect. A plurality of notches (23''') are provided at the peripheral side of the heat-dissipating body (2) to increase the heat-dissipating area of the heat-dissipating body (2). The heat-dissipating structure is an integrative three-dimensional structure, which is more convenient for using, more steady for installation, and better for heat-dissipating.

Description

Heat dissipation structure for LED lamps

The present invention relates to a heat dissipation structure, and more particularly to a heat dissipation structure for an LED lamp. Background technique

LED lamps are widely used in the field of lighting because of their high luminous efficiency, long service life, high safety and reliability, and energy saving and environmental protection. It is well known that LED lamps generate heat while illuminating, while for high-power LED lamps, the amount of heat required is relatively large. In order to ensure the normal operation of the electronic components of the LED lamp, it is a common method to use a heat sink to help the LED lamp to dissipate heat.

The heat dissipating devices used in the prior art are various, including the use of a cooling fan, and the forced airflow generated by the fan is used to take away the heat generated by the LED lamp, but the cooling fan is bulky, and the structure is lighter for the LED lamp with a lighter structure. There are differences in compatibility; it also includes the use of heat sinks, which are assembled with a plurality of heat sinks with perforations, through which the heat of the LED lamps is transferred to the heat sinks, through the perforations, but the method needs to pass the lock The solid assembly is connected to a plurality of fins, and the assembly process is cumbersome and loose, and the heat dissipation effect is not high. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat dissipating structure for an LED lamp which is easy to install and use, stable, and has a higher heat dissipation effect.

In order to achieve the above object, the present invention provides a heat dissipating structure for an LED lamp, comprising a heat dissipating body and at least one heat conducting column, wherein the corresponding heat conducting column on the heat dissipating body is provided with a slot, and the heat conducting column is received in the slot, A plurality of perforations for dissipating heat are disposed through the heat dissipating body, and the perforations are disposed on the heat dissipating body to surround the heat conducting column, and the heat conducted by the heat conducting column is dissipated from the inner wall of the through hole by convection.

The heat sink has a three-dimensional structure with a circular, stripe, and polygonal cross section.

The longitudinal section of the heat sink is elliptical, square or polygonal.

A plurality of notches are formed on the outer peripheral side of the heat sink.

The perforations in the heat sink are circular, elliptical, square or polygonal.

The perforations in the heat sink are at least two shapes of a circle, an ellipse, a square, and a polygon. There are also several heat dissipation ribs on the lower surface of the heat sink. The plurality of perforations are formed in a plurality of layers around the circumferential side of the heat transfer column, and the height of the perforations decreases from the circumferential side of the heat transfer column to the layer.

The plurality of perforations are formed in a plurality of layers around the circumference of the thermally conductive column, and the heights of the plurality of perforations are the same.

The utility model has the beneficial effects that the heat dissipation structure for the LED lamp of the invention has an integrated three-dimensional structure, the whole structure is high, and the installation and use are more convenient and stable; the heat dissipation effect can be improved by providing a plurality of heat conduction columns, and By setting a plurality of perforations in a ladder shape, the convection effect with the air is enhanced, thereby improving the heat dissipation effect; in addition, a notch can be provided on the outer peripheral side of the heat dissipation body to increase the heat dissipation area of the heat dissipation body, thereby further improving the heat dissipation effect, and therefore, The invention has a wide application range and a stronger heat dissipation effect.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings. DRAWINGS

The technical solutions and other advantageous effects of the present invention will be apparent from the following detailed description of embodiments of the invention.

In the drawings,

1 is a schematic structural view of a heat dissipation structure for an LED lamp according to an embodiment of the present invention; FIG. 2 is a plan view of FIG.

3 is an exploded perspective view showing the operation of assembling the LED lamp of FIG. 1;

4 is a schematic structural view of a heat dissipation structure for an LED lamp according to another embodiment of the present invention;

FIG. 5 is a schematic structural view of a heat dissipation structure for an LED lamp according to another embodiment of the present invention; FIG.

6 is a schematic structural view of a heat dissipation structure for an LED lamp according to another embodiment of the present invention;

7 is a schematic structural view of a heat dissipation structure for an LED lamp according to still another embodiment of the present invention;

Figure 8 is a front elevational view of Figure 7. detailed description

For further progress The present invention is to be understood as being limited and not limited by the accompanying drawings.

As shown in FIG. 1-2, a heat dissipation structure for an LED lamp according to an embodiment of the present invention includes: a heat sink 2 and at least one heat conducting column 4, wherein the heat radiating body 2 is provided with a slot 20 corresponding to the heat conducting column 4. The heat conducting column 4 is received in the slot 20. The heat sink 2 is further provided with a plurality of through holes 21, and the plurality of through holes 21 are disposed on the heat dissipating body 2 to surround the heat conducting column 4. The heat conducted by the heat conducting column 4 can be dissipated from the inner wall of the through hole 21 by convection. The shape of the through hole 21 may be any shape such as a polygon, a square, a circle, or an ellipse. Further, the shape of the through hole 21 may be at least two of a polygon, a square, a circle, an ellipse, and the like.

The heat conducting column 4 is made of a highly thermally conductive material, such as copper, aluminum, etc., for conducting heat generated by the LED lamp to the heat sink 2. The heat conducting column 4 is provided with a through opening 41 for electrically connecting the wires of the LED lamp to the external power source.

In the embodiment, the heat dissipating body 2 has a substantially three-dimensional structure with a circular cross section, and a slot 20 is formed in the slot 2, and the slot 20 can be disposed at a central position of the heat sink 2. In this embodiment, the heat conducting column 4 is a cylinder, so the slot 20 corresponds to a cylindrical hole. A plurality of perforations 21 are disposed around the heat conducting column 4 on the heat radiating body 2 to form a plurality of layers arranged around the circumferential side of the heat conducting column 4, and the through holes 21 have a hexagonal shape. In particular, the longitudinal section of the heat dissipating body 2 in the embodiment is elliptical, such that the end faces of the plurality of perforations 21 opened thereon are inclined, and the height of the plurality of perforations 21 is self-heating from the heat dissipating body 2 The side of the circumference is gradually degraded layer by layer, forming a ladder shape. Thus, not only is the appearance more beautiful, but also the natural wind energy in the air flows in any direction and comes into contact with the inner wall of the perforation 21, and is quickly taken away by the convection method and is transmitted to the LED lamp to be transmitted to The heat on it.

The invention can select different heat sinks according to the size of different LED lamps. As shown in FIG. 3, in the embodiment, when the LED lamp is installed, the heat conducting column 4 is received in the slot 20 of the heat sink 2 and closely fits the inner side of the slot 20. The LED lamp includes a circuit board 11, an LED lamp 12 mounted thereon, and a lamp cover 13 overlying the LED lamp 12. The circuit board 11 on which the LED lamp 12 is mounted is disposed on the top surface of the heat conducting column 4, and the lamp cover 13 is disposed on the LED lamp 12; wherein the heat conducting column 4, the circuit board 11 and the lamp cover 13 are respectively provided with corresponding Connected connecting holes (not shown), the LED lamps are mounted on the heat sink 2 by a connecting member 10 (such as a screw). The circuit board 11 can be electrically connected to the external power source through the wire through the opening 41 of the heat conducting column 4, so that the LED lamp 12 is energized to emit light. In addition, the height of the heat conducting column 4 can also be lower than the height of the slot 20, so that when the LED lamp is assembled thereon, the connection surface with the heat sink 2 can be made flat, ensuring integrity and being more beautiful.

In use, the LED lamp 12 is energized and illuminated, and the heat generated by the illuminating light is transmitted to the heat conducting column 4, and the heat is transferred to the heat radiating body 2 by the heat conduction of the heat conducting column 4, and the heat radiating body 2 not only utilizes the heat radiating body 2 The heat is radiated through the perforation 21 on the side of the circumference, and most of the heat is contacted with the air through the inner wall of the perforation 21, and the heat is quickly dissipated into the air by convection to achieve a better heat dissipation effect.

As shown in FIG. 4, a heat dissipating structure for an LED lamp according to another embodiment of the present invention is different from the above embodiment. The heat dissipating body 2 has a plurality of slots 20 defined therein. The heat conducting column 4, , facilitates installation and use of a plurality of LED lights and heat dissipation. As shown in the figure, the heat dissipating body 2 of the embodiment has three slots 20 formed therein, and the three slots 20 are cylindrical holes and are connected to each other. The heat conducting column 4 can be cylindrical and adopts three tightness. The heat sinking column 4 of the shape of the slot 20 is formed integrally with the slot 20, or the slot 20 is integrally formed. As another alternative embodiment, the slot may also be arranged in a plurality of slots, and the plurality of slots 20" shown in FIG. 5 are sequentially connected to form an annular ring, and the heat conducting column 4" is placed in the annular ring, and the heat sink is disposed. A plurality of perforations 21" on the 2" surround the inner and outer sides of the annular crucible to ensure a heat dissipation effect; or a plurality of slots 20" as shown in Fig. 6 are sequentially connected into one or more annular turns.

The heat dissipating body 2, 2, 2" described in the above embodiments may have an elliptical shape, a polygonal shape, or the like, and may be square, and a plurality of perforations 21, 21, 21" are formed around the heat conducting columns 4, 4. 4" on the side of the circumference, the height of several layers of perforations 21, 21, 21" can also be set consistently. Referring to FIG. 5-6, a plurality of heat dissipation ribs 22" may be disposed on the lower surface of the heat sink 2", and a plurality of heat dissipation ribs 22" may be intersecting or parallel across the lower surface of the heat sink 2". The 22" setting not only enhances the structural strength of the heat sink 2", but also increases the heat dissipation area of the heat sink 2" to improve heat dissipation.

As shown in FIG. 7-8, a heat dissipating structure for an LED lamp according to another embodiment of the present invention is different from the above embodiment in that the heat dissipating body 2" is a long-shaped three-dimensional structure, which can have different specifications. The size is set to use LED lamps of different specifications. The heat sink 2" has at least one slot 20", and a plurality of through holes 21", at least one heat conducting column 4", corresponding to the receiving slot 20", in, A plurality of perforations 21" are provided on the slot 20" and on the peripheral side to form a multi-layer arrangement around the heat conducting column 4". It is worth mentioning that the heat sink 2" can also have several notches 23 on the outer peripheral side. " , , notch 23" , the shape can be any shape such as semicircle, square, polygon or triangle. The setting of the notch 23", can increase the heat sink 2", the area, thereby increasing the heat dissipation area of the heat sink 2", and further improving the heat dissipation effect.

In summary, the heat dissipating structure for the LED lamp of the present invention has a heat dissipating body which is integrated into a three-dimensional structure, has high integrity, and is more convenient and stable to be installed and used; the heat dissipating effect can be improved by providing a plurality of heat conducting columns, and A plurality of perforations are arranged in a ladder shape to enhance the convection intensity with the air, thereby improving the heat dissipation effect; in addition, a gap may be provided on the outer peripheral side of the heat dissipation body to increase the heat dissipation area of the heat dissipation body, thereby further improving the heat dissipation effect. Therefore, the invention has wide application range and heat dissipation effect More powerful.

The above is only the preferred embodiment of the present invention, and various other changes and modifications can be made in accordance with the technical solutions and technical concept of the present invention, and all such changes and modifications can be made by those skilled in the art. All should fall within the scope of protection of the claims of the present invention.

Claims

Rights request

A heat dissipating structure for an LED lamp, comprising: a heat dissipating body and at least one heat conducting column; the corresponding heat conducting column on the heat dissipating body is provided with a slot, the heat conducting column is received in the slot, and the heat dissipating body runs through A plurality of perforations for dissipating heat are provided, and the perforations are disposed on the heat dissipating body to surround the heat conducting column, and the heat conducted by the heat conducting column is convected from the inner wall of the perforation by convection.

2. The heat dissipation structure for an LED lamp according to claim 1, wherein the heat sink is a three-dimensional structure having a circular, stripe, and polygonal cross section.

3. The heat dissipation structure for an LED lamp according to claim 1, wherein the longitudinal section of the heat sink is elliptical, square, or polygonal.

4. The heat dissipation structure for an LED lamp according to claim 1, wherein a plurality of notches are formed on an outer peripheral side of the heat sink.

5. The heat dissipation structure for an LED luminaire according to claim 1, wherein the perforations in the heat sink are circular, elliptical, square or polygonal.

6. The heat dissipation structure for an LED lamp of claim 1, wherein the perforations in the heat sink are at least two of a circular shape, an elliptical shape, a square shape, and a polygonal shape.

7. The heat dissipation structure for an LED lamp according to claim 1, wherein the heat dissipation body is further provided with a plurality of heat dissipation ribs on the lower surface.

8. The heat dissipation structure for an LED lamp according to claim 1, wherein the plurality of perforations are arranged in a plurality of layers around a circumference side of the heat transfer column, and a height of the perforations is gradually decreased from the circumferential side of the heat transfer column to the layer.

9. The heat dissipation structure for an LED luminaire according to claim 1, wherein the plurality of perforations are formed in a plurality of layers arranged around a circumference side of the heat transfer column, and the heights of the plurality of layers of perforations are uniform.