TWI460374B - Heat dissipation device of lamp and heat sink structure thereof - Google Patents

Description

Lamp heat sink and its heat sink structure

The invention relates to a heat dissipating device, in particular to a heat dissipating device for a lamp having a heat pipe and a heat dissipating body structure thereof.

Light Emitting Diode (LED) has been widely used in various luminaire illumination due to its high brightness, power saving, long life and many other advantages. However, since the illuminating diode system is a point light source, In use, a plurality of LEDs are usually combined into one LED lamp group to increase the illumination range and brightness during illumination.

Since the LED lamp group is accompanied by a large amount of heat, most of the current LED lamps have a heat dissipating device. The main arrangement method is to combine the heat conducting components such as the heat conducting seat, the heat pipe and the heat radiating body into a heat dissipating device, and then combine the heat dissipating devices. On the socket, the heat generated when the LED is operated by the heat sink is dissipated.

In the above structure, the heat sink is generally composed of a plurality of heat sinks, and the heat sinks are enlarged by the arrangement of the heat sinks, and the heat dissipation speed is increased; however, as the number of light emitting diodes increases and the high power light shines In the development of polar bodies, the heat generated by the operation of LED light groups has gradually increased. Therefore, how to increase the heat transfer area and the heat dissipation area as much as possible in a certain space environment to improve the heat dissipation efficiency and meet the use requirements, that is, the motivation of the inventors.

In view of the above, the present inventors have made great efforts to improve and solve the above-mentioned shortcomings, and have finally made a proposal to rationally and effectively improve the above-mentioned defects.

An object of the present invention is to provide a heat sink for a lamp and a heat sink structure thereof to increase a heat transfer area and a heat dissipation area, and to improve heat dissipation efficiency.

In order to achieve the above object, the present invention is a heat dissipation device for a lamp, which is combined with a lamp holder. The heat dissipation device comprises a heat-conducting base, a U-shaped heat pipe, and a heat sink. The surface of the heat-conducting base is provided with a groove and a U-shaped heat pipe. The utility model comprises an evaporation section and a second condensation section, wherein the evaporation section is combined in the groove, the heat dissipation body comprises a circular cylinder and a plurality of hollow heat dissipation cylinders, and the circular cylinder has two accommodating grooves corresponding to the two condensation sections, and the heat dissipation The cylindrical structures are arranged outside the circular cylinder and arranged in a ring shape.

In order to achieve the above object, the present invention is a heat sink structure for piercing a U-shaped heat pipe having two condensation sections, the heat sink structure including a circular cylinder, a plurality of hollow heat dissipation cylinders, and a plurality of outer heat sinks. A plurality of inner fins, the circular cylinder is a hollow cylinder with corresponding two heat dissipating passages, and has two accommodating grooves corresponding to the two condensing sections, and the inner shape of the circular cylinder is shaped like a fishbone. The support piece and the circular cylinder are connected integrally through the connection of the support piece, and the heat dissipation cylinders are arranged on the outer side of the circular cylinder column and arranged in a ring shape, and the outer heat dissipation fin is formed on the outer edge surface of the circular cylinder column, and The outer edge extends outwardly, and the inner fin is formed on the inner wall surface of the circular cylinder and extends inward from the inner wall.

Another object of the present invention is to provide a heat sink for a lamp and a heat dissipating body structure thereof, which are provided with a slot or a notch on the circular cylinder and the heat dissipating cylinder for promoting the gas. The flow of the body increases the heat dissipation effect.

Compared with the prior art, the heat dissipation system of the lamp heat dissipation device and the heat dissipation body structure thereof comprises a circular cylinder and a plurality of hollow heat dissipation cylinders, wherein the heat dissipation cylinders are arranged outside the circular cylinder column and have a ring shape. Arrangement, because the heat sink has a fishbone-shaped support piece, a plurality of outer heat sinks, an inner heat sink and an auxiliary heat sink, the area of the heat sink can be enlarged, and the heat transfer area can be increased as much as possible in a certain space environment. The heat dissipating area is used to quickly dissipate the heat conducted to the heat dissipating body, thereby improving the heat dissipating efficiency; further, the circular column and the heat dissipating cylinder of the present invention are provided with slots or notches, which is favorable for increasing the flow of the gas. The rate further increases the utility of the invention.

1‧‧‧ lamp holder

2‧‧‧Keyhole

3‧‧‧ accommodating space

4‧‧‧LED module

5‧‧‧Locking components

10‧‧‧ Thermal base

20‧‧‧U-shaped heat pipe

21‧‧‧Evaporation section

211‧‧‧ Flat surface

22‧‧‧Condensation section

30‧‧‧ Heat sink

31‧‧‧ Round column

310‧‧‧ accommodating slots

3100‧‧‧ gap

311‧‧‧The heat dissipation channel

32‧‧‧heating cylinder

321‧‧‧Auxiliary heat sink

3211‧‧‧Assisted external heat sink

3212‧‧‧Auxiliary inner heat sink

320‧‧‧ slotting

33‧‧‧Support film

34‧‧‧External heat sink

35‧‧‧Inside heat sink

40‧‧‧Homothermal board

30a‧‧‧ heat sink

31a‧‧‧ Round column

310a‧‧‧容槽

3100a‧‧‧ gap

3101a‧‧‧ Semi-circular

3102a‧‧‧ Semi-circular

311a‧‧‧ hollow semi-cylindrical

3110a‧‧‧ spacing

3111a‧‧‧Support film

3112a‧‧‧ Curved piece

3113a‧‧‧ Curved piece

312a‧‧‧ hollow semi-cylindrical

3121a‧‧‧Support film

3122a‧‧‧ Curved piece

3123a‧‧‧ Curved piece

32a‧‧‧heating cylinder

The first figure is an exploded perspective view of the heat sink of the lamp and the structure of the heat sink of the present invention; the second figure is one of the combined sectional views of the heat sink of the lamp of the present invention and the structure of the heat sink; the third figure is the heat dissipation of the lamp of the present invention FIG. 2 is a schematic cross-sectional view of the heat sink of the present invention; FIG. 4 is a plan view showing the heat sink of the present invention; and FIG. 6 is a plan view of the heat sink of the present invention; Example.

The detailed description and technical content of the present invention are set forth in the accompanying drawings.

Please refer to the first to third figures, respectively, which are the lamp heat dissipation device of the present invention and An exploded view of the heat sink structure and a cross-sectional view of the assembled two sides; the heat sink of the lamp and the heat sink structure of the present invention are used to be coupled to a lamp holder 1 of a lamp, the heat sink comprising a heat conducting base 10, U-shaped heat pipe 20 and a heat sink 30.

The lamp holder 1 has a plurality of keyholes 2, and the lamp holder 1 has an accommodating space 3 and an LED module 4 disposed in the accommodating space 3.

The heat conducting base 10 is made of a material having a thermal conductivity, and a surface of the heat conducting base 10 defines a recess 11 corresponding to the locking hole 2 of the socket 1 . The heat-conducting base 10 is locked to the socket 1 by a plurality of locking elements 5.

The U-shaped heat pipe 20 includes an evaporation section 21 and a second condensation section 22, and the evaporation section 21 is incorporated in the groove 11 and has a flat surface 211.

The heat dissipating body 30 includes a circular cylinder 31 and a plurality of hollow heat dissipating cylinders 32. The circular cylinder 31 has two accommodating grooves 310 corresponding to the two condensing sections 22, and the heat dissipating cylinders 32 are spaced apart at intervals. The circular cylinders 31 are arranged outside and arranged in a ring shape.

In addition, the heat dissipating device may further include a temperature equalizing plate 40 disposed in the accommodating space 3 of the lamp holder 1 and sandwiched between the heat conducting base 10 and the LED module 4 . .

Referring to the fourth and fifth figures, respectively, a perspective view and a plan cross-sectional view of the heat sink of the present invention are provided. In this embodiment, the circular cylinder 31 is a hollow cylinder and is provided with corresponding two. Heat dissipation channel 311. Further, in the heat dissipating body 30, a fishbone-shaped supporting piece 33 is formed in the inside of the circular column 31, and the circular column 31 is integrally connected to each other by the connection of the supporting piece 33. The two accommodating slots 310 are fastened to the two sides of the support piece 33. The accommodating groove 310 has a substantially C-shaped cross section and is provided with an opening. A gap 3100 facing outwards. The heat dissipating cylinder 32 has a substantially C-shaped cross section, and the heat dissipating cylinder 32 has a slot 320 disposed outwardly.

The heat dissipating body 30 further includes a plurality of outer fins 34 and inner fins 35. The outer fins 34 are formed on the outer peripheral surface of the circular cylinder 31 and extend outward from the outer edge. The inner fins 35 are formed on the inner wall surface of the circular cylinder 31 and extend inwardly from the inner wall. Moreover, a part of the outer fins 34 are connected to the heat dissipating cylinders 32, and the heat dissipating cylinders 32 are connected to the ends of the outer fins 34.

In this embodiment, the heat dissipating cylinder 32 has a plurality of auxiliary fins 321 , and the auxiliary fins 321 include a plurality of auxiliary outer fins 3211 and auxiliary inner fins 3212 , and the auxiliary outer fins 3211 are formed on the heat dissipating fins 32 . The outer peripheral surface of the heat dissipating cylinder 32 extends outwardly from the outer edge surface. The auxiliary inner fins 3212 are formed on the inner wall surface of the heat dissipating cylinder 32 and extend inwardly from the inner wall surface. The arrangement of the heat dissipation cylinder 32, the fishbone support piece 33, the outer heat sink 34, the inner heat sink 35 and the auxiliary heat sink 321 can be used to increase the heat dissipation area of the heat sink 30, thereby increasing the heat dissipation efficiency.

Referring to FIG. 6 again, it is another embodiment of the heat sink of the present invention; in this embodiment, the heat sink 30a includes a circular cylinder 31a and a plurality of hollow heat dissipation cylinders 32a, and the circular cylinder 31a has two The heat dissipating cylinders 32a are disposed outside the circular cylinders 31a and arranged in a ring shape.

The difference from the first embodiment is that the circular cylinder 31a is composed of two hollow semi-cylindrions 311a, 312a, each of which includes a supporting piece 3111a and two curved shapes connecting the supporting piece 3111a. Sheets 3112a, 3113a, the two curved pieces 3112a, 3113a are respectively close to each other from the two ends of the support piece 3111a The direction is extended and a gap 3110a is maintained between the two curved pieces 3112a, 3113a. Similarly, the other hollow semi-cylindrical 312a includes a support piece 3121a and two curved pieces 3122a, 3123a connecting the support piece 3121a. The two supporting pieces 3111a and 3121a of the two hollow semi-cylindrical elements 311a and 312a are attached to each other.

Furthermore, the two accommodating grooves 310a are located at the two side ends of the supporting pieces 3111a and 3121a, and the accommodating grooves 310a are also formed by the corresponding two semi-circular pieces 3101a and 3102a, and the cross-section is substantially C-shaped. And the accommodating groove 310a is provided with a notch 3100a with the opening facing outward. In addition, the configuration of other structures is the same as that of the first embodiment, and details are not described herein again.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and other equivalent variations of the patent spirit of the present invention are all within the scope of the invention.

1‧‧‧ lamp holder

5‧‧‧Locking components

10‧‧‧ Thermal base

20‧‧‧U-shaped heat pipe

30‧‧‧ Heat sink

31‧‧‧ Round column

310‧‧‧ accommodating slots

32‧‧‧heating cylinder

Claims (12)

A heat dissipation device for a lamp is coupled to a lamp holder of the lamp, the heat dissipation device includes: a heat-conducting base having a groove formed on a surface thereof; and a U-shaped heat pipe including an evaporation section and a second condensation section, An evaporation section is coupled in the groove; and a heat dissipating body includes a circular cylinder and a plurality of hollow heat dissipation cylinders, wherein the circular cylinder is a hollow cylinder, and the circular cylinder is internally formed with a fishbone shape a support piece, the circular column is integrally connected through the connection of the support piece, the circular column has two accommodating grooves corresponding to the two condensation sections, and the section of the heat dissipation cylinder is substantially C And the heat dissipating cylinder has a slot disposed outwardly, and the heat dissipating cylinders are spaced apart from the outer side of the circular cylinder and arranged in a ring shape. The heat sink of the lamp of claim 1, wherein the circular cylinder is provided with corresponding two heat dissipation channels. The heat sink of the lamp of claim 1, wherein the circular cylinder is composed of two hollow semi-cylindrical columns, each hollow semi-cylindrical system comprises a support piece and two curved pieces connecting the support piece, the two The two supporting sheets of the hollow semi-cylindrical are attached to each other. The heat sink of the lamp of claim 3, wherein the two curved pieces extend from the two ends of the support piece toward each other, and a space is maintained between the two curved pieces, the receiving groove It consists of two corresponding semi-circles. The luminaire heat sink of claim 2 or 3, wherein the two accommodating grooves are located at two sides of the support piece, the accommodating groove has a substantially C-shaped cross section, and the accommodating groove is provided. A notch with the opening facing outward. The heat sink of the lamp of claim 1, wherein the heat sink further comprises a plurality of outer fins and a plurality of inner fins, wherein the outer fins are formed on an outer surface of the circular cylinder and The outer edge extends outwardly, and the inner fins are formed on an inner wall surface of the circular cylinder and extend inwardly from the inner wall. The heat dissipation device of the lamp of claim 1, wherein each of the heat dissipation cylinders has a plurality of auxiliary heat sinks, and some auxiliary heat dissipation fins are formed on an outer edge surface of the heat dissipation cylinder, and extend outward from the outer edge surface, and partially assist The heat sink is formed on the inner wall surface of the heat dissipation cylinder and extends inward from the inner wall surface. The utility model relates to a heat dissipating body structure, which is used for penetrating a U-shaped heat pipe having two condensation sections. The heat dissipating body structure comprises: a circular cylinder column, which is a hollow cylinder which is provided with corresponding two heat dissipation channels, and the circular cylinder column has Corresponding to the two accommodating grooves of the two condensation sections, the inside of the circular cylinder is formed with a fishbone-shaped support piece, and the circular cylinders are connected to each other through the connection of the support piece; a hollow heat-dissipating cylinder, each of the heat-dissipating cylinders has a substantially C-shaped cross section, and the heat-dissipating cylinder has a slot disposed outwardly, and the heat-dissipating cylinders are spaced apart from the outer side of the circular cylinder and arranged in a ring shape; a plurality of outer fins are formed on the outer peripheral surface of the circular cylinder and extend outward from the outer edge; and a plurality of inner fins are formed on the inner wall surface of the circular cylinder and from the inner wall surface Extend inward. The heat sink structure of claim 8, wherein the circular cylinder is composed of two hollow semi-cylindrical columns, each hollow semi-cylindrical system comprises a support piece and two curved pieces connecting the support piece, the two The two supporting sheets of the hollow semi-cylindrical are attached to each other. The heat sink structure of claim 9, wherein the two curved strips respectively extend from the two ends of the support sheet toward each other, and a space is maintained between the two curved sheets, and the receiving portion is disposed. The trough system is composed of two corresponding semi-circles. The heat sink structure of claim 8 or 9, wherein the two receiving slots are located at two sides of the support piece, the receiving groove has a substantially C-shaped cross section, and the receiving groove is provided with an opening. A gap facing outwards. The heat dissipating body structure of claim 8, wherein each of the heat dissipating cylinders has a plurality of auxiliary fins, and a part of the auxiliary fins is formed on an outer peripheral surface of the heat dissipating cylinder, and extends outward from the outer edge, and partially assists The heat sink is formed on the inner wall surface of the heat dissipation cylinder and extends inward from the inner wall surface.