AU2012101445A4

AU2012101445A4 - LED lamp device

Info

Publication number: AU2012101445A4
Application number: AU2012101445A
Authority: AU
Inventors: Chin-Wen Wang
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-24
Filing date: 2012-09-24
Publication date: 2012-10-25
Anticipated expiration: 2020-09-24

Abstract

OF DISCLOSURE A light emitting diode (LED) lamp device includes a holding assembly, at least an LED and a heat pipe. The holding assembly includes a thermal-conductive base and at least a fixing component connected to the thermal-conductive base. The LED is mounted on one side of the 5 thermal-conductive base. The heat pipe is inserted in the fixing part and forming a passageway for communicating an inside of the heat pipe and the passageway. As this result, a plurality of airflows are formed on the thermal-conductive base, and then the LED lamp device can achieves better thermal-conductive efficiency. r - (.n

Description

LED LAMP DEVICE BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a lighting apparatus, and in particular to light emitting diode 5 (LED) lamp device. Description of Prior Art Light emitting diode (LED) has advantages of high brightness, lower power consumption, and long life time, and becomes popular in multiple fields. While power of lighting module constructed by LEDs increases, LED is applied to various lighting apparatus, and becomes 10 mainly light source corresponded to energy conservation and environmental protection. Therefore, applicability of the LED is becoming more and more wildly. For example, a conventional street lamp usually uses incandescent bulbs or mercury lamps as luminous body. However, incandescent bulbs or mercury lamps is replaced by LEDs nowadays, which achieves the effect of energy conservation. 15 However, when the power and brightness of LEDs gradually increase, heat generated by the LEDs is also higher than small-power or low-brightness LEDs. While the heat cannot be effectively dissipated, it will affect lighting quality of the LEDs, even damage the LEDs, and shorten the lifetime of the LEDs. Therefore, a designation of LEDs with good thermal conduction can not only increase light quality, but lengthen lifetime of the LEDs. 20 SUMMARY OF THE INVENTION It is an object to provide a light emitting diode (LED) lamp device, which is communicating an inside of a heat pipe and a passageway, and forming a plurality of airflow passageways on a thermal-conductive base to achieve good thermal-conductive efficiency. Accordingly, the LED lamp device comprises a holding assembly, at least one LED and a 1 heat pipe. The holding assembly comprises a thermal-conductive base and at least one fixing component. The LED is mounted on one side of the thermal-conductive base. The heat pipe is inserted in the fixing component communicating with an inside of the heat pipe. The inside of the heat pipe is communicating with the passageway, such that an airflow 5 passage is formed on the thermal-conductive base, and convection is formed by blowing cold gas into the airflow passage for conducting heat generated by the LED out of the thermal-conductive base and the heat pipe. Therefore, the LED lamp device of the present invention has good heat-dissipating efficient. In addition, the fixing component comprises a plurality of coupling blocks extending from 10 the thermal-conductive base and arranged in interval, each coupling block comprises a plurality of engaging parts for engaging with buckling sections formed within the heat pipe. Two protruding strips are extending from an inner wall of the heat pipe, wherein the buckling sections are formed by bending the two protruding strips by stamping. Therefore, the connective stability of the heat pipe and the fixing component is increased. 15 Moreover, a through hole is disposed on the thermal-conductive base and opposite to the coupling block. The through hole is also corresponded to an inside of the heat pipe. As the result, an airflow passage is formed by the inside of the heat pipe and the passage, and another airflow passage is formed by the inside of the heat pipe and the through hole for enhancing heat-dissipating effect of the LED lamp device. 20 Furthermore, when the LED lamp device is used in pool weather, rainwater can flow into the heat pipe, and then discharge by the passageway or the through hole, thus achieving an effect of cleaning the heat pipe and maintaining heat-dissipating effect of the heat pipe. Besides, a plurality of fins are connected to an outer circumference of the heat pipe for enhancing heat-dissipating effect of the heat pipe. 25 BRIEF DESCRIPTION OF DRAWING 2 The features of the invention believed to be novel are set forth with particularity in the appended claims. The invention itself however may be best understood by reference to the following detailed description of the invention, which describes certain exemplary embodiments of the invention, taken in conjunction with the accompanying drawings in which: 5 Fig. 1 is an assemble view of an LED lamp device according to a first embodiment of the present invention. Fig. 2 is a perspective view of a thermal-conductive base and a heat pipe according to the first embodiment of the present invention. Fig. 3 is a schematic view showing that heat pipe covers engaging part according to the first 10 embodiment of the present invention. Fig. 4 is a schematic view showing that protruding strips are formed to buckling sections according to the first embodiment of the present invention. Fig. 5 is an assemble view of thermal-conductive base and heat pipe according to the first embodiment of the present invention. 15 Fig. 6 is an assembly sectional view of thermal-conductive base and heat pipe according to the first embodiment of the present invention. Fig. 7 is another assembly sectional view of thermal-conductive base and heat pipe according to the first embodiment of the present invention. Fig. 8 is an assembly sectional view of the LED lamp device according to a second 20 embodiment of the present invention. Fig. 9 is a section view of a heat pipe according to a second embodiment of the present invention. Fig. 10 is an assembly sectional view of a thermal-conductive base and heat pipe according to a third embodiment of the present invention. 25 Fig. 11 is another assembly sectional of the thermal-conductive base and heat-pipe 3 according to the present invention. Fig. 12 is a sectional view of the heat pipe according to the third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION 5 A preferred embodiment of the present invention will be described with reference to the drawings. Referring to Fig. 1 to Fig. 7, which show a light emitting diode (LED) lamp device according to a first embodiment of the present invention. The LED lamp device includes a holding assembly 1, at least one LED 2 and at least one heat pipe 3. 10 The holding assembly 1 includes a heat-conductive base 11 and at least one fixing component 12 connected to the thermal-conductive base 11. In this embodiment, the holding assembly 1 includes, for example, multiple fixing components 11. The thermal-conductive base 11 is made of copper, aluminum or other material with good thermal conductivity. Each fixing component 12 includes at least two coupling blocks 120 extending from the thermal-conductive 15 base 11 and arranged in intervals. An interval s is between each two adjacent coupling blocks 120. Each coupling block 120 has a raised part 121 and an engaging part 122 extending from a direction which is far away from where the hear-conductive base 11 is disposed. An interval s is between each two adjacent raised part 121. A through hole is disposed on the thermal-conductive base 11 and opposite to where the coupling block 120 is disposed. 20 The LED 2 is mounted on one side of the thermal-conductive base 11. The heat pipe 3 is made of aluminum, copper or other material with good thermal conductivity, and the amount of the hear pipes 3 is the same as the amount of the fixing components 3. Each heat pipe 3 is inserted in each fixing component 12, such that a passageway 4 is formed and communicated with an inside of each heat pipe 3. In more particularly, each 25 heat pipes 3 is engaged with each coupling block 120 and covers the engaging parts 122, such 4 that each heat pipe 3 is fixed on the raised parts 121. The interval s located between each two adjacent coupling blocks 120 is formed the passageway 4 and communicating with the heat pipe 3. In addition, an outer circumference of each engaging part 122 is engaged with an inner circumference of each heat pipe 3. A plurality of buckling sections 31 are formed within the heat 5 pipe 3, and the amount of the buckling sections 31 is the same as the amount of the engaging parts 12 for engaging with the engaging parts 122, respectively. In particularly, the buckling parts 122 are formed by extending two protruding strips 311 on an inner wall of the heat pipe 3 at first, and then bending the protruding strips 311 by stamping. Referring to Fig. 8, Fig. 8 is an assemble view of the LED lamp device according to the first 10 embodiment of the present invention. The holding assembly 1 includes a thermal-conductive base 11 and a plurality of fixing components 12 connected to the thermal-conductive base 11. The LED 2 is mounted on one side of the thermal-conductive base 11. The heat pipes 3 are respectively inserted in the fixing components 12, such that the passageways 4 are formed and communicating with the heat pipes 3. As the result, the inside of each heat pipes 3 is 15 communicating with the passageway 4, and an airflow-passageway is formed on the thermal-conductive base 4. A convection guiding heat generated by the LED 2 away from the thermal-conductive base 11 and the pipes 3 is achieved by blowing a cold gas into the airflow passage, and then the LED lamp device of the present invention can have good thermal-conductive efficiency. 20 Referring again to Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are assembly sectional views of the heat pipe and fixing component according to the present invention. Each fixing component 12 includes the coupling blocks 120 extending from the thermal-conductive base 11 and arranged in interval. Each coupling block 120 has a plurality of engaging parts 122. Each heat pipe 3 has a plurality of buckling sections 31 engaged with the engaging parts 122. The buckling sections 31 25 are formed by extending two protruding strips 311 from the inner wall of the heat pipe 3 and bent 5 the protruding strips 311 by stamping, which can increase connective stability of the heat pipe 3 and the fixing component 12. In addition, each heat pipe 3 is a circular pipe, and each engaging parts 122, for example, is of meniscus shape. However, in the practical application, the profile of each heat pipe 3 and each 5 engaging part 122 may be adjusted by demand. With referring again to Fig.5 to Fig. 7, the through hole 14 is disposed on the thermal-conductive base 11 and opposite to where the coupling block 120 is disposed. The through hole is also corresponded to the inside of the heat pipe 3, such that a flow passageway is defined by the inside of the heat pipe 3 and the passageway 4, and another flow passageway is 10 defined by the inside of the heat pipe 3 and the through hole 14, which can increase heat-dissipating efficiency of the LED lamp device of the present invention. Besides, when used the LED lamp device is used in street light or outdoor application, it is difficult to prevent dust from attaching the heat pipe 3, which will decrease the heat-dissipated efficiency of the heat pipe 3. However, the LED lamp device of the present invention let 15 rainwater flow through the heat pipe 3, and then discharges the rainwater via the passageway 4 or the through hole 14, thus achieving the effect of cleaning the heat pipe 3 and maintaining heat-dissipating efficiency of the heat pipe 3. Referring to Fig. 9, Fig. 9 is a section view of a heat pipe according to a second embodiment of the present invention. A plurality of fins 32 are connected to an outer circumference of the heat 20 pipe 3 for increasing heat-dissipating efficiency of the heat pipe 3. Referring to Fig. 10 to Fig. 12, Fig. 10 is an assembly sectional view of a thermal-conductive base and heat pipe according to a third embodiment of the present invention, Fig. 11 is another assembly sectional of the thermal-conductive base and heat-pipe according to the third embodiment of the present invention, and Fig. 12 is a sectional view of the heat pipe 25 according to the third embodiment of the present invention. A passageway 4 is disposed on the 6 heat pipe 3. In more particularly, at least one opening 33 is disposed on an outer circumference of the heat pipe 3, the distance between the opening 33 and the thermal-conductive base 11 is larger than the height of the coupling block 120 for preventing the opening 33 from blocking by the coupling block 120. The opening 33 is used for forming a passageway 4. As the result, an inside 5 of the heat pipe 3 is communicated with the passageway 4, and an airflow passageway is formed on the thermal-conductive base 11 for convection, which can assist in conducting heat generated by LED 2. Besides, the combination of each heat pipe 3 and each fixing component 12 is described as below. Each fixing component 12 has a coupling block 120 extending from the 10 thermal-conductive base 11. The coupling block 120 is an annulus block. In addition, an engaging part 122 is extending from a direction which is opposite to where the thermal-conductive base 11 is disposed. The engaging part 122 is also an annulus block. Furthermore, at least one L-shaped block 312 is formed on an inner wall of the heat pipe 11 and extending to a direction which is toward where the thermal-conductive base 11 is disposed. The 15 amount of the L-shaped block 312 is, for example, four. A buckling section 31 is formed on the L-shaped block 312, and at least one space is collectively defined by the buckling section 31 and the heat pipe 3. The engaging part 122 penetrates through and is confined in the space for stably connecting the heat pipe 3 and fixing component 12. Although the present invention has been described with reference to the foregoing preferred 20 embodiment, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims. 7

Claims

1. A light emitting diode (LED) lamp device comprising: a holding assembly comprising a thermal-conductive base and at least one fixing component connected to the thermal-conductive base; 5 at least one LED mounted on one side of the thermal-conductive base; and at least one heat pipe inserted in the fixing component and forming a passageway communicating with an inside of the heat pipe.

2. The LED lamp device in claim 1, wherein the fixing component includes at least two coupling blocks extending form the thermal-conductive base and arranged in interval, and an 10 interval is formed between each two coupling block for forming the passageway, the heat pipe is inserted in the coupling blocks, each coupling block comprises a raised part and an engaging part, the engaging part is extending from the raised part and toward a direction away from the thermal-conductive base , the heat pipe covers the engaging parts of the coupling blocks, and the interval is formed between each two adjacent raised parts. 15

3. The LED lamp device in claim 1, wherein the fixing component comprises a coupling block extending from the thermal-conductive base, and the heat pipe is engaged with the coupling block, an outer circumference of the heat pipe has at least one opening for forming the passageway.

4. The LED lamp device in claim 2 or 3, wherein the coupling block comprises a plurality of 20 engaging parts extending from a direction away from the thermal-conductive base, the heat pipe has a plurality of buckling sections, and the buckling sections are respectively engaged with the engaging parts, wherein an amount of the buckling sections is the same as an amount of the engaging part, two protruding strips are extending from an inner wall of the heat pipe, wherein the buckling sections are formed by bending the two protruding strips respectively by stamping, a 25 through hole is disposed on the thermal-conductive base and corresponded to the coupling block. 8

5. The LED lamp device in claim 2 or 3, wherein the coupling block comprises an engaging part extending from a direction away from the thermal-conductive base, the heat pipe comprises a plurality of buckling sections for respectively engaging with the engaging parts, wherein an amount of the buckling sections is the same as an amount of the engaging parts, at least one 5 L-shaped block is formed on an inner wall of the heat pipe, a buckling section is formed on the L-shaped block, and at least one space is collectively defined by the buckling section and the heat pipe, the engaging parts penetrating through and confined the space, a through hole is disposed on the thermal-conductive base and corresponded to the coupling block. 9