JP2013182875A - Heat radiating device for led lighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat radiating device for LED lighting capable of obtaining a sufficient heat radiation performance.SOLUTION: A heat radiating device for LED lighting 3 includes a heat pipe 11 having a heat receiving part 12 for receiving heat generated from an LED, a cooling fin 13 which is installed integrally with the heat pipe 11, and a wiring protection tube 14 of which both upper and lower ends are open and which protects power feeding wiring for supplying power to the LED. A container 15 of the heat pipe 11 filled with working fluid has a working fluid circulation part 21 which is installed to surround the surroundings of the wiring protection tube 14 and extending in vertical direction. The cooling fin 13 is integrally installed in the working fluid circulation part 21 of the container 15 of the heat pipe 11 to protrude to the opposite side to the wiring protection tube 14.

Description

  The present invention relates to a heat dissipation device that dissipates heat generated from LEDs of an LED lamp used in an LED lighting device.

  In this specification and claims, the top and bottom of FIGS. 1, 5 and 8 are referred to as the top and bottom.

  An LED lamp having a light emitting source having an LED has excellent characteristics of high luminous efficiency, low power consumption, and brightness compared to conventional lamps such as incandescent bulbs. 80% becomes heat, and the resin material surrounding the LED is deteriorated by heat, so that the light emission efficiency is lowered and the life is shortened.

  Therefore, in the case of a low power consumption type LED lamp, the heat generated from the LED is radiated by providing the radiation fins around the LED lamp.

  By the way, in the LED illumination using the high power consumption type LED lamp with power consumption of 10 W or more, the heat radiation is insufficient in the above-described configuration.

  Therefore, as a heat radiating device for LED lighting using a high power consumption type LED lamp, it is provided with a heat pipe and a heat radiating member attached to the heat pipe, and the heat radiating member includes a heat pipe insertion cylinder and a heat pipe insertion cylinder. There has been proposed a heat dissipating device that includes heat dissipating fins integrally provided radially on the outer peripheral surface and in which a heat pipe is inserted and fixed in a heat pipe insertion cylinder of a heat dissipating member (see Patent Document 1).

  However, in the heat radiating device described in Patent Document 1, since the heat radiating fins and the heat pipe are separately formed, when the LED lighting has high power consumption, the heat transfer between the heat pipe and the heat radiating fin is low. Insufficient heat dissipation performance may not be obtained.

JP 2008-243780 A

  An object of the present invention is to provide a heat dissipation device for LED lighting that solves the above-described problems and obtains sufficient heat dissipation performance.

  In order to achieve the above object, the present invention comprises the following aspects.

1) A heat pipe having a heat receiving portion for receiving heat generated from the LED, a heat radiation fin provided integrally with the heat pipe, and a wiring protection cylinder that protects a power supply wiring that opens at both upper and lower ends and supplies power to the LED And
The container in which the working fluid in the heat pipe is sealed has a working fluid circulation portion extending in the vertical direction provided around the wiring protection cylinder, and the heat radiating fin is in the working fluid circulation portion of the heat pipe container. An LED illumination heat dissipation device that is integrally provided so as to protrude to the opposite side of the wiring protection cylinder.

  2) The working fluid circulation part of the heat pipe container extends in the vertical direction with the surrounding wall provided on the outside of the wiring protection cylinder, and connects the wiring protection cylinder and the surrounding wall, and the wiring protection cylinder. And a partition wall that divides the space between the wall and the surrounding wall into a plurality of sections provided so as to surround the wiring protection cylinder, and the radiation fins are provided on the surrounding wall of the working fluid circulation part, The heat dissipating device for LED lighting according to the above 1), wherein the wall and partition wall of the working fluid circulation part and the heat dissipating fins are formed in one extruded shape member.

  3) Upper and lower ends of the partition wall of the extruded shape member are removed to form both upper and lower spaces through all sections, and the upper end opening of the upper space and the lower end opening of the lower space are joined to the extruded shape member. The LED illumination heat dissipating device according to 2) above, wherein the upper and lower header portions are formed so as to be passed between the upper and lower ends of all sections by being covered with a lid.

  4) The wiring protection cylinder and the surrounding wall are cylindrical, the radiation fins are provided radially at equal angular intervals, and the tips of at least three radiation fins arranged in series are located on one plane, The heat dissipating device for LED lighting according to 2) or 3), wherein a heat dissipating fin whose tip is not located on the flat surface is in a non-interfering state with the flat surface.

  5) The above 2) or 3), wherein the wiring protection cylinder and the surrounding wall are cylindrical, the radiation fins are provided radially at equal angular intervals, and the tip side portion of the radiation fin is divided into a plurality of branch portions. LED lighting heat dissipation device.

  6) The tips of at least three branch portions arranged in a row are located on one plane, and the heat radiation fin having the branch portion whose tip is not located on the plane is in a non-interfering state with the plane. The heat dissipating device for LED lighting according to 5) above.

  7) The hydraulic fluid distribution part of the heat pipe container is provided with a plurality of distribution pipes provided at intervals on the outside of the wiring protection cylinder so as to surround the wiring protection cylinder. The LED illumination heat dissipating device according to 1) above, wherein the flow pipe and the heat dissipating fin are formed in one extruded shape member.

  8) The upper and lower ends of the wiring protection cylinder are joined to the upper and lower holding members, and the extruded profile is located on the circumference of the entire circulation pipe, and the radiating fin is located on the circumference where the entire circulation pipe is located. The heat radiation for LED lighting according to 7) above, wherein the upper and lower ends of all the flow pipes are arranged radially at equal angular intervals from above, and are connected to the upper and lower header parts provided on the upper and lower holding members. apparatus.

  9) The heat dissipating device for LED lighting according to 7) or 8) above, wherein a plurality of heat dissipating portions are provided in the heat dissipating fins at intervals in the extending direction of the heat dissipating fins.

  According to the heat radiating device for LED illumination of 1) to 9) above, a heat pipe having a heat receiving portion for receiving heat generated from the LED, a heat radiating fin provided integrally with the heat pipe, upper and lower ends open and the LED And a wiring protection cylinder that protects the power supply wiring that supplies power to the container, and the container in which the hydraulic fluid in the heat pipe is sealed has a hydraulic fluid circulation part that extends in the vertical direction around the wiring protection cylinder. And the heat dissipating fins are integrally provided in the hydraulic fluid distribution part of the heat pipe container so as to protrude to the opposite side of the wiring protection cylinder. Even in the case of LED lighting using a high power consumption type LED lamp with improved thermal performance, sufficient heat dissipation performance can be obtained, and the life of the LED lamp can be extended. In addition, the working fluid distribution part of the heat pipe container is provided around the wiring protection cylinder, and the heat radiating fin is integrated with the working liquid circulation part of the heat pipe container so as to protrude on the opposite side of the wiring protection cylinder. Since it is provided, it becomes difficult for the heat generated from the LED to be transmitted to the power supply wiring disposed in the wiring protection cylinder, and the life of the power supply wiring can be extended.

  According to the LED illumination heat dissipating device of 2) above, the wiring protection cylinder, the working fluid circulation part, and the heat dissipating fin can be made relatively easily.

  According to the LED lighting heat dissipation device of 5), the distance between the base ends of the heat dissipation fins is narrow, and the drawbacks of the straight heat dissipation fins extending toward the tip can be improved. It can be made uniform from the end to the end.

  According to the LED illumination heat dissipating device of the above 7), it is possible to relatively easily extrude the extruded shape composed of the flow pipe and the heat dissipating fins.

It is the vertical sectional view seen from the front which shows the whole heat dissipation device for LED lighting of Embodiment 1 of this invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a figure equivalent to FIG. 2 which shows the modification of the radiation fin of the thermal radiation apparatus for LED illumination of FIG. It is the vertical sectional view seen from the front which shows the whole structure of the thermal radiation apparatus for LED lighting of Embodiment 2 of this invention. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is a figure equivalent to a part of FIG. 5 which shows the modification of the wiring protection cylinder of the thermal radiation apparatus for LED illumination of FIG. It is the EE sectional view taken on the line of FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  Moreover, the same code | symbol is attached | subjected to the same part and the same thing through all drawings, and the overlapping description is abbreviate | omitted.

Example 1
This embodiment is shown in FIGS.

  FIG. 1 shows the overall configuration of an LED illumination equipped with a heat dissipation device according to Embodiment 1 of the present invention, and FIGS.

  1 to 3, the LED illumination (1) includes an LED lamp (2) and an LED illumination heat dissipating device (3) (hereinafter referred to as "LED illumination") that radiates heat generated from the LED (not shown) of the LED lamp (2). Simply referred to as a heat dissipation device (3)).

  The LED lamp (2) includes a circuit board (5), a light source (4) composed of a LED unit (6) mounted on the circuit board (5) and having a plurality of LEDs (not shown), and a light source (4 ) And an umbrella-like reflector (7) that reflects light emitted from. The circuit board (5) of the light source (4) of the LED lamp (2) is attached to the inner surface of the reflector (7). In addition, the circuit board (5) is provided with a holder (8) which is formed with a screw on the outer peripheral surface and extends upward through the reflector (7).

  The heat dissipating device (3) includes a heat pipe (11) having a heat receiving part (12) that receives heat generated from the LED of the LED lamp (2), and a plurality of heat dissipating fins ( 13) and a cylindrical wiring protection cylinder (14) that is open at both upper and lower ends and protects a power supply wiring that supplies power to the LED.

  The heat pipe (11) is obtained by enclosing a working fluid (not shown) in a working fluid enclosure (16) of the container (15). The container (15) includes a cylindrical surrounding wall (17) provided on the outer side in the radial direction of the wiring protection cylinder (14), and a wiring protection cylinder (14) and an surrounding wall (17 ), And the space between the wiring protection cylinder (14) and the surrounding wall (17) is arranged in the circumferential direction of the wiring protection cylinder (14) and surrounds the wiring protection cylinder (14). A hydraulic fluid circulation section (21) having a partition wall (19) that partitions the plurality of compartments (18) provided is provided. The radiating fins (13) are integrally provided radially on the outer peripheral surface of the surrounding wall (17) so as to be equiangularly spaced in the circumferential direction. The wiring protection cylinder (14), the surrounding wall (17) and the partition wall (19) of the hydraulic fluid circulation part (21), and the heat radiation fin (13) are formed in one aluminum extruded profile (22).

  Both the upper and lower end portions of the partition wall (19) of the extruded shape member (22) are formed with both upper and lower spaces (23) and (24) that are removed over a predetermined length and are allowed to pass through all compartments (18). The upper end opening of the upper space (23) and the lower end opening of the lower space (24) are closed by an aluminum lid (25) joined to the extruded shape member (22) by brazing or the like. Upper and lower header portions (27) and (28) are formed through the upper and lower ends of all the sections (18). A container (15) is formed by the extruded shape member (22) and the lid (25), and a hydraulic fluid enclosing part (16) is formed by the entire compartment (18) and the upper and lower header parts (27) and (28). Then, the working fluid (not shown) is enclosed in the working fluid enclosure (16) to constitute the heat pipe (11).

  In the LED lamp (2), the male screw (8) of the holder (8) of the circuit board (5) is formed at the lower end of the inner peripheral surface of the wiring protection cylinder (14), so that the heat dissipation device (3) Removably attached to. The circuit board (5) of the LED lamp (2) is connected to a power supply wiring (not shown) that is inserted into the wiring protection cylinder (14) from the upper end opening and penetrates the holder (8). And the heat receiving part (12) which receives the heat generated from the LED of the light source (4) of the LED lamp (2) is provided at the lower end part of the wiring protection cylinder (14) of the container (15) of the heat pipe (11). It has been.

  In the LED lighting device (1) described above, when light is emitted from the light source (4) of the LED lamp (2), heat is emitted from the LED of the light source (4). The heat generated from the LED passes through the holder (8) to the heat receiving part (12) of the heat pipe (11), and is transferred to the working liquid in the working liquid sealing part (16) to evaporate the working liquid. Phase hydraulic fluid is formed. As a result, the pressure in the lower part of the hydraulic fluid sealing part (16) rises, and the gas phase hydraulic fluid flows upward in the compartment (18) of the hydraulic fluid circulation part (21). While the gas phase hydraulic fluid flows upward in the compartment (18) of the hydraulic fluid circulation section (21), the heat of the gas phase hydraulic fluid is transmitted to the heat radiating fin (13) through the surrounding wall (17), The gas phase hydraulic fluid that has been radiated to the outside from the radiation fins (13) and has been deprived of heat condenses. Since the recondensed liquid phase hydraulic fluid flows downward due to gravity, in the heat pipe (11), an upward flow of the vapor phase hydraulic fluid and a downward flow of the liquid phase hydraulic fluid occur, and the hydraulic fluid is circulated. It happens. Therefore, the LED of the light source (4) of the LED lamp (2) is cooled.

  FIG. 4 shows a modification of the heat dissipating fin (13) of the heat dissipating device (3) of FIG.

  4 is divided into a plurality of branch portions (29) in the horizontal cross section. And the tip of at least three branch parts (29) arranged in a row is located on one plane (P), and the branch part (29) whose tip is not located on the plane (P). The radiating fin (13) has a non-interference state with the plane (P).

  Here, on both the upper and lower sides and the left and right sides in FIG. 4, the tips of at least three branch portions (29) arranged continuously are located on one plane (P). Therefore, there are four planes (P), and a square is formed by these planes (P).

  In the case of this radiating fin (13), deformation of the radiating fin (13) after extrusion molding of the extruded profile (22) can be suppressed.

  2 and 3 also, the tips of at least three radiating fins (13) arranged continuously on both the upper and lower sides and the left and right sides in FIGS. The radiating fin (13) having a branch portion that is located above and whose tip is not located on the plane may be in a non-interfering state with the plane.

Embodiment 2
This embodiment is shown in FIGS.

  FIG. 5 shows the overall configuration of an LED illumination equipped with a heat dissipation device according to Embodiment 2 of the present invention, and FIGS. 6 and 7 show the configuration of the main part.

  5 to 7, an LED illumination (30) includes an LED lamp (31) and an LED illumination heat dissipation device (32) (hereinafter simply referred to as a heat dissipation device (31)) that dissipates heat generated from the LED of the LED lamp (31). 32)).

  The LED lamp (31) is composed of a circuit board (5) and a plurality of light emitting sources (4) which are mounted on the circuit board (5) and are composed of an LED unit (6) having a plurality of LEDs (not shown). ing.

  The heat radiating device (32) includes a heat pipe (33) having a heat receiving portion (34) that receives heat generated from the LED of the LED lamp (31), and a plurality of heat radiating fins ( 39) and a cylindrical wiring protection cylinder (35) that is open at both upper and lower ends and protects the power supply wiring that supplies power to the LED.

  The heat pipe (33) is obtained by enclosing a working fluid in a working fluid enclosure (37) of the container (36). The container (36) has a plurality of flow pipes (38) provided on the outside of the wiring protection cylinder (35) at intervals in the circumferential direction of the wiring protection cylinder (35) so as to surround the wiring protection cylinder (35). The hydraulic fluid distribution section (40) is made of, each of the distribution pipes (38) is integrally provided with a radiation fin (39), and the distribution pipe (38) and the radiation fin (39) are one aluminum extruded profile. (41). The flow pipes (38) of all the extruded profiles (41) are arranged so as to be positioned on one circumference, and the radiation fins (39) are equiangularly spaced in the circumferential direction with respect to the wiring protection cylinder (35). So as to be integrated in a radial manner.

  The upper and lower ends of the wiring protection cylinder (35) are joined to the upper and lower holding members (42) and (43) made of aluminum. Further, the upper and lower end portions of the entire flow pipe (38) are connected to the upper and lower header portions (44) and (45) provided on the upper and lower holding members (42) and (43).

  The upper holding member (42) is composed of a circular aluminum upper plate (46) and a circular aluminum lower plate (47) joined to the lower surface of the upper plate (46) by brazing or the like. (46) A through hole (46a) (47a) is formed at the center of (47), and the upper end of the wiring protection cylinder (35) is brazed to the part around the through hole (47a) of the lower plate (47). Etc. are joined together. In addition, an annular lower bulging portion (48) is formed on the radially outer portion of the lower plate (47) where the wiring protection cylinder (35) is joined, and the lower bulging portion (48) The upper header portion (44) is provided by closing the upper end opening by the upper plate (46), and the entire flow pipe (38) is connected to the bulging end wall of the lower bulging portion (48).

  The lower holding member (43) is composed of a circular aluminum lower plate (51) and a circular aluminum upper plate (52) joined to the upper surface of the lower plate (51) by brazing or the like. (52) A through hole (52a) (51a) is formed at the center of (51), and the lower end of the wiring protection cylinder (35) is brazed to the part around the through hole (52a) of the upper plate (52). Etc. are joined together. In addition, an annular upper bulging portion (53) is formed in a portion radially outside the portion where the wiring protection cylinder (35) is joined in the upper plate (52), and the upper bulging portion (53) The lower header portion (45) is provided by closing the lower end opening with the lower plate (51), and the entire flow pipe (38) is connected to the bulging end wall of the upper bulging portion (53). Further, the thickness of the lower plate (51) is such that the light emitting source (4) can be attached by screwing or the like.

  Then, a container (36) is formed from the distribution pipe (38) and the upper and lower holding members (42) and (43) of the entire extruded profile (41), and the entire distribution pipe (38) and the upper and lower header sections (44). ) (45) forms a hydraulic fluid enclosure (37), and hydraulic fluid (not shown) is enclosed in the hydraulic fluid enclosure (37) to constitute a heat pipe (33).

  The heat radiating fin (39) is provided with a plurality of heat radiating portions (54) at intervals in the extending direction of the heat radiating fin (39). The heat dissipating part (54) may be, for example, perpendicular to the projecting direction of the heat dissipating fin (39), or may be inclined so as to form a certain angle. The width of the heat dissipating part (54) in the horizontal cross section gradually increases from the base end side of the heat dissipating fin (39) toward the tip end side.

  The LED lamp (31) is attached to the heat dissipation device (32) by screwing the circuit board (5) around the through hole (51a) on the lower surface of the lower plate (51) of the lower holding member (43). It is detachably attached. The circuit board (5) of the LED lamp (31) is connected to a power supply wiring (not shown) placed in the wiring protection cylinder (35) from the upper end opening. The lower holding member (43) of the container (36) of the heat pipe (33) is provided with a heat receiving portion (34) that receives heat generated from the LED of the light source (4) of the LED lamp (31). .

  In the LED lighting device described above, when light is emitted from the light source (4) of the LED lamp (31), heat is emitted from the LED of the light source (4). The heat generated from the LED is transferred to the heat receiving part (34) of the heat pipe (33) in the lower plate (51) of the lower holding member (43), and transferred to the hydraulic fluid in the hydraulic fluid sealing part (37) to operate. The liquid evaporates to produce a gas phase working fluid. As a result, the pressure in the lower part of the hydraulic fluid sealing part (37) rises, and the gas phase hydraulic fluid flows upward in the flow pipe (38) of the hydraulic fluid circulation part (40). While the gas-phase hydraulic fluid flows upward in the flow pipe (38) of the hydraulic fluid circulation section (40), the heat of the vapor-phase hydraulic fluid is transferred to the radiation fin (39) and from the radiation fin (39) to the outside. The gas phase hydraulic fluid that has been radiated by heat and deprived of heat condenses. Since the recondensed liquid phase hydraulic fluid flows downward due to gravity, in the heat pipe (33), an upward flow of the vapor phase hydraulic fluid and a downward flow of the liquid phase hydraulic fluid occur, and the hydraulic fluid is circulated. It happens. Therefore, the LED of the light source (4) of the LED lamp (31) is cooled.

  8 and 9 show a modification of the wiring protection cylinder of the LED illumination heat dissipation device (32) shown in FIG.

  8 and 9, a plurality of wiring protection cylinders (55) are provided, here two. The portion surrounded by the lower bulging portion (48) of the lower plate (47) in the upper and lower plates (46) (47) of the upper holding member (42) of the container (36) of the heat pipe (33), and the lower holding In the upper and lower plates (52) and (51) of the member (43), the same number of through holes (52b) as the wiring protection cylinder (55) are surrounded by the upper bulging portion (53) of the upper plate (52). (51b) is formed, and the upper end of the wiring protection cylinder (55) is joined to the portion around the through hole of the lower plate (47) of the upper holding member (42) by brazing or the like, and the lower end is also held lower. The member (43) is joined to a portion around the through hole (52b) of the upper plate (52) by brazing or the like.

  The circuit board (5) of the LED lamp (31) is attached to and detached from the heat dissipation device (32) by being screwed to the part between the through holes (51b) on the lower surface of the lower plate (51) of the lower holding member (43). It is attached freely. The circuit board (5) of the LED lamp (31) is connected to a power supply wiring (not shown) placed in the wiring protection cylinder (55) from the upper end opening. The lower holding member (43) of the container (36) of the heat pipe (33) is provided with a heat receiving portion (34) that receives heat generated from the LED of the light source (4) of the LED lamp (31). .

  The LED illumination heat dissipation device according to the present invention is used to efficiently dissipate heat generated from the LED in the high power consumption type LED illumination.

(1): LED lighting device
(3) (32): Heat dissipation device
(11) (33): Heat pipe
(12) (34): Heat receiving part
(13) (39): Radiation fin
(14) (35) (55): Wiring protection cylinder
(15) (36): Container
(17): Go wall
(18): Section
(19): Partition wall
(21) (40): Hydraulic fluid distribution section
(22) (41): Extruded profile
(23) (24): Both upper and lower spaces
(25): Lid
(27) (28): Upper and lower headers
(29): Branch
(38): Distribution pipe
(42) (43): Upper and lower both holding members
(44) (45): Upper and lower headers
(54): Heat radiation part

Claims (9)

A heat pipe having a heat receiving portion for receiving heat generated from the LED, a heat radiation fin provided integrally with the heat pipe, and a wiring protection cylinder that opens the upper and lower ends and protects the power supply wiring that supplies power to the LED Has
The container in which the working fluid in the heat pipe is sealed has a working fluid circulation portion extending in the vertical direction provided around the wiring protection cylinder, and the heat radiating fin is in the working fluid circulation portion of the heat pipe container. An LED illumination heat dissipation device that is integrally provided so as to protrude to the opposite side of the wiring protection cylinder. The working fluid distribution part of the heat pipe container extends in the vertical direction with the surrounding wall provided at an interval outside the wiring protection cylinder, and connects the wiring protection cylinder and the surrounding wall. A partition wall that divides the space between the walls into a plurality of sections provided so as to surround the wiring protection cylinder, and the radiation fins are provided on the surrounding wall of the hydraulic fluid circulation section. The heat dissipating device for LED lighting according to claim 1, wherein the surrounding wall and partition wall of the circulation part and the heat dissipating fins are formed in one extruded shape member. The upper and lower end portions of the partition wall of the extruded shape member are removed to form the upper and lower spaces through all the sections, and the upper end opening of the upper space and the lower end opening of the lower space are formed by a lid joined to the extruded shape member. The heat dissipating device for LED lighting according to claim 2, wherein the upper and lower header portions are formed so as to pass through both upper and lower ends of all sections. The wiring protection cylinder and the surrounding wall are cylindrical, and the radiating fins are provided radially at equiangular intervals, and the tips of at least three radiating fins arranged in series are located on one plane, and the tips are The heat dissipating device for LED lighting according to claim 2 or 3, wherein the heat dissipating fins not located on the flat surface are in a non-interfering state with the flat surface. 4. The LED illumination according to claim 2, wherein the wiring protection cylinder and the surrounding wall are cylindrical, and the radiation fins are provided radially at equal angular intervals, and a portion on the tip side of the radiation fin is divided into a plurality of branch portions. Heat dissipation device. The tips of at least three branch parts arranged in a row are located on one plane, and the radiating fin having the branch part whose tip is not located on the plane is in a non-interference state with the plane. The heat dissipating device for LED illumination according to claim 5. The working fluid distribution part of the heat pipe container is provided with a plurality of distribution pipes provided at intervals so as to surround the wiring protection cylinder on the outside of the wiring protection cylinder, and each of the distribution pipes is provided with a radiation fin. 2. The heat radiating device for LED lighting according to claim 1, wherein the flow pipe and the heat radiating fin are formed in one extruded shape member. The upper and lower ends of the wiring protection cylinder are joined to the upper and lower holding members, and the extruded shape member is located on the circumference of the entire circulation pipe, and the radiating fin is located on the circumference where the entire circulation pipe is located. The LED lighting heat dissipating device according to claim 7, wherein the upper and lower ends of all the flow pipes are arranged in a radial pattern at equal angular intervals, and are connected to the upper and lower header parts provided on the upper and lower holding members. The heat radiating device for LED lighting according to claim 7 or 8, wherein a plurality of heat radiating portions are provided on the heat radiating fins at intervals in a protruding direction of the heat radiating fins.

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