JP2014078397A - Led lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting device capable of preventing a straight tube type LED lamp from being removed by mistake.SOLUTION: An LED lighting device 101 includes a straight tube type LED lamp 200 having a base 250 arranged on both ends in an axial direction and a socket 401 to which the base 250 is loaded. The socket 401 includes a connection movable part 420 which is directly in contact with the base 250 and which takes an advance state for holding the straight tube type LED lamp 200 and a retreat state for generating a state in which the straight tube type LED lamp 200 can be removed by being separated with respect to the other socket further than in the advance state, and a fixing part 410 for supporting the connection movable part 420. The LED lighting device 101 includes a spacer 500 which is interposed between the straight tube type LED lamp 200 and the fixing part 410, and which prevents the connection movable part 420 from taking the retreat state from the advance state.

Description

  The present invention relates to an LED lighting device.

  A straight tube type LED lamp using an LED chip as a light source has been proposed. Patent Document 1 includes a long rectangular substrate, a plurality of LED modules mounted on the substrate, a tubular cover that accommodates the substrate, and two caps. Each of the plurality of LED modules incorporates an LED chip. The two caps are provided at both ends of the straight tube LED lamp. In this straight tube type LED lamp, the plurality of LED modules can be made to emit light by fitting the two caps into the sockets of the socket of the general fluorescent lamp lighting fixture. It can be used as an alternative to the shaped fluorescent lamp.

  The straight tube LED lamp emits light from the plurality of LED modules through the tubular cover. The appearance of such a straight tube LED lamp is similar to that of a straight tube fluorescent lamp. For this reason, the said straight tube | pipe type LED lamp attached to the general fluorescent lamp lighting fixture may be mistaken for a straight tube | pipe type fluorescent lamp, and may be replaced with a straight tube | pipe type fluorescent lamp. For example, in order to attach the said straight tube | pipe type LED lamp, a change may be given to the power supply part of a general fluorescent lamp lighting fixture. It is not preferable that a straight tube fluorescent lamp is attached to a general fluorescent lamp illuminator to which such a change has been made.

Japanese Utility Model Publication No. 6-54103

  The present invention has been conceived under the circumstances described above, and an object thereof is to provide an LED lighting device capable of preventing a straight tube LED lamp from being removed accidentally. .

  The LED lighting device provided by the present invention includes a straight tube LED lamp having two bases disposed at both ends in the axial direction, and two sockets into which the two bases are loaded. One of the two sockets is in direct contact with the base, and the straight tube LED lamp is removed by moving forward with the straight tube LED lamp and being separated from the other socket than the forward state. A connecting movable part that takes a retracted state that produces a possible state, and a fixed part that supports the connecting movable part, and is interposed between the straight tube LED lamp and the fixed part, and the connection The movable part is provided with a spacer that prevents the retracted state from being taken from the advanced state.

  In a preferred embodiment of the present invention, the connection movable part protrudes from the fixed part in the forward movement state, and when the connection movable part is in the backward movement state, the straight tube LED lamp is Do not enter the fixed part.

  In a preferred embodiment of the present invention, the spacer covers at least a part of the connecting movable portion in the advanced state in the circumferential direction of the straight tube LED lamp.

  In a preferred embodiment of the present invention, the spacer covers the entire circumference in the circumferential direction of the straight tube LED lamp among the connection movable parts in the forward movement state.

  In a preferred embodiment of the present invention, the spacer includes an arc-shaped portion whose both ends are adjacent to each other, and two fastening portions projecting outward from the both ends in the radial direction of the straight tube LED lamp.

  In a preferred embodiment of the present invention, the spacer has separation preventing means for preventing the two fastening portions from separating.

  In a preferred embodiment of the present invention, the separation preventing means is a rivet or screw that penetrates the two fastening portions.

  In preferable embodiment of this invention, the base part which supports the said 2 socket is provided, and the said fastening part exists in the said base part side with respect to the said connection movable part.

  In a preferred embodiment of the present invention, the arc-shaped portion is made of an elastically deformable material.

  In a preferred embodiment of the present invention, the elastically deformable material is a resin.

  In a preferred embodiment of the present invention, the outer peripheral surface of the arc-shaped portion is flush with the outer peripheral surface of the base of the straight tube LED lamp.

  In a preferred embodiment of the present invention, a base portion that supports the two sockets is provided, and the spacer is fixed to the base portion.

  In a preferred embodiment of the present invention, the spacer extends from the both ends of the arcuate part toward the base part, with an arcuate part located on the opposite side of the base part across the connecting movable part. Two leg parts and two attachment parts connected to the tips of these leg parts and attached to the base part.

  In a preferred embodiment of the present invention, the two attachment portions are attached to the base portion by rivets or screws.

  In a preferred embodiment of the present invention, one of the two attachment portions is engaged with an attachment opening provided in the base portion, and one of the two attachment portions is the rivet or screw. It is attached to the base part.

  In a preferred embodiment of the present invention, when the straight tube LED lamp is viewed in the longitudinal direction, the connection movable portion is larger than the straight tube LED lamp, and the connection movable portion is in the retracted state. In addition, a part of the straight tube LED lamp enters the fixed portion.

  In a preferred embodiment of the present invention, the spacer has an interference portion that overlaps both the connection movable portion and the fixed portion in the longitudinal direction of the straight tube LED lamp.

  In a preferred embodiment of the present invention, the spacer has an arcuate portion that is connected to the interference portion and covers the base.

  In a preferred embodiment of the present invention, a base portion that supports the two sockets is provided, and the spacer is fixed to the base portion.

  In a preferred embodiment of the present invention, the spacer includes two leg portions extending from both ends of the arc-shaped portion toward the base portion, and 2 attached to the base portion connected to the tips of the leg portions. And two attachment portions.

  In a preferred embodiment of the present invention, the two attachment portions are attached to the base portion by rivets or screws.

  In a preferred embodiment of the present invention, one of the two attachment portions is engaged with an attachment opening provided in the base portion, and one of the two attachment portions is the rivet or screw. It is attached to the base part.

  According to such a configuration, the spacer between the straight tube LED lamp and the fixed portion prevents the straight tube LED lamp from moving to the connection movable portion side. For this reason, the said connection movable part will continue taking an advance state, and it will prevent taking a reverse state. Therefore, it is possible to prevent the straight tube LED lamp from being accidentally removed.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows the LED lighting apparatus based on 1st Embodiment of this invention. It is sectional drawing which follows the II-II line | wire of FIG. It is principal part sectional drawing in alignment with the III-III line of FIG. It is a perspective view which shows the process of assembling the LED lighting apparatus of FIG. It is a perspective view which shows the process of assembling the LED lighting apparatus of FIG. It is a perspective view which shows the process of assembling the LED lighting apparatus of FIG. It is a perspective view which shows the process of assembling the LED lighting apparatus of FIG. It is a perspective view which shows the LED lighting apparatus based on 2nd Embodiment of this invention. It is sectional drawing which follows the IX-IX line of FIG. It is sectional drawing which shows the LED lighting apparatus based on 3rd Embodiment of this invention. It is principal part sectional drawing which shows the LED lighting apparatus based on 4th Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 3 show an LED lighting device according to a first embodiment of the present invention. The LED lighting device 101 of this embodiment includes a straight tube LED lamp 200, a base part 300, two sockets 401 and 402, and a spacer 500. The LED lighting device 101 is a lighting device in which a straight tube LED lamp 200 is used instead of a general straight tube fluorescent lamp.

  The straight tube LED lamp 200 includes a substrate 210, a plurality of LED chips 220, a heat dissipation member 230, a cover 240, and two bases 250, and has an elongated cylindrical shape.

  The substrate 210 has a long rectangular shape with the axial direction of the straight tube LED lamp 200 as the longitudinal direction, and has, for example, a base material made of glass epoxy resin and a wiring pattern formed on the base material. The base material preferably has an insulating surface, and may be composed of, for example, aluminum covered with ceramics or an insulating film.

  The plurality of LED chips 220 are light sources of the straight tube LED lamp 200, and have a plurality of semiconductor layers made of, for example, a GaN-based semiconductor. The LED chip 220 is, for example, a bare chip type that is directly mounted on the substrate 210. In this case, the LED chip 220 is covered with, for example, a fluorescent resin (not shown). When the LED chip 220 emits blue light, for example, the fluorescent resin is made of a material in which a transparent material that is excited by blue light and emits yellow light is mixed. As a result, the straight tube LED lamp 200 emits white light. The LED chip 220 is not limited to the bare chip type, and includes, for example, a case that covers the LED chip 220, the fluorescent resin that is filled in the case and covers the LED chip 220, and a mounting terminal that is electrically connected to the LED chip 220. It may be used as a packaged LED module. The plurality of LED chips 220 are arranged, for example, along the longitudinal direction of the substrate 210.

  The heat radiating member 230 is made of a metal such as aluminum, for example, and is joined to the substrate 210. The heat dissipating member 230 is used for efficiently dissipating heat from the plurality of LED chips 220.

  The cover 240 is tubular and is made of, for example, milky white translucent resin. The cover 240 accommodates the substrate 210, the plurality of LED chips 220, and the heat dissipation member 230.

  The two caps 250 are disposed at both ends of the cover 240 in the longitudinal direction. Each base 250 is provided with two terminals 251. All or one of the two terminals 251 is electrically connected to the wiring pattern of the substrate 210. The two caps 250 have the same shape and size as the caps of the straight tube LED lamp 200 for general straight tube fluorescent lamps.

  The base part 300 is a part for attaching the straight tube LED lamp 200 to, for example, a ceiling, and is made of, for example, metal or resin. In the present embodiment, the base portion 300 has a rectangular parallelepiped shape in which the axial direction of the straight tube LED lamp 200 is the longitudinal direction.

  The two sockets 401 and 402 are spaced apart at positions near both ends in the longitudinal direction of the base part 300. The two sockets 401 and 402 are portions into which the two caps 250 of the straight tube type LED lamp 200 are loaded, and have shapes and sizes that can be loaded with the caps of general straight tube fluorescent lamps.

  As shown in FIG. 3, the socket 401 includes a fixed portion 410, a connection movable portion 420, and a spring 430. The fixing part 410 is a part fixed to the base part 300. In the present embodiment, the fixing portion 410 has a shape in which a rectangular parallelepiped portion and a semicircular cross-sectional portion are combined. As shown in FIGS. 1 and 3, the outer peripheral surface of the semicircular section in the fixed portion 410 and the outer peripheral surface of the base 250 of the straight tube LED lamp 200 are flush with each other.

  A part of the connection movable part 420 is housed in the fixed part 410, and the two terminals 251 of the base 250 are inserted. In the present embodiment, the connection movable part 420 has a substantially cylindrical shape whose diameter is slightly smaller than that of the straight tube LED lamp 200. The spring 430 is housed in the fixed portion 410 and is interposed between the fixed portion 410 and the connection movable portion 420. With such a configuration, as shown in FIG. 3, the connection movable unit 420 takes an advanced state in which the connection movable unit 420 protrudes from the fixed unit 410 toward the socket 402 by the elastic force of the spring 430. Further, when the spring 430 contracts by receiving an external force, most of the connection movable part 420 is accommodated in the fixed part 410. This state is the reverse state as referred to in the present invention.

  The spacer 500 is for preventing the socket 401 from taking the retracted state from the advanced state. In the present embodiment, as shown in FIGS. 1 to 3, the spacer 500 includes an arcuate portion 510, two fastening portions 520, and a rivet 580. The arcuate portion 510 and the two fastening portions 520 are made of a material that can be elastically deformed. Such a material is preferably a resin or a metal.

  The arc-shaped portion 510 has a shape similar to a short-axis cylinder having the same axial direction as that of the straight tube LED lamp 200. As clearly shown in FIG. 2, the arc-shaped portion 510 is separated from the base portion 300 side. As shown in FIG. 3, the arc-shaped portion 510 is disposed between the fixed portion 410 and the base 250 of the straight tube LED lamp 200 in the axial direction of the straight tube LED lamp 200. When the straight tube LED lamp 200 is viewed in the axial direction, the fixed portion 410, the arc-shaped portion 510 of the spacer 500, and the base 250 of the straight tube LED lamp 200 overlap. In the present embodiment, the diameter of the arc-shaped portion 510 is substantially the same as the diameter of the base 250 of the straight tube LED lamp 200.

  The two fastening portions 520 protrude outward in the radial direction of the straight tube LED lamp 200 from both ends of the arc-shaped portion 510 and overlap each other. The rivet 580 corresponds to an example of a separation preventing unit that prevents the two fastening portions 520 from separating. The rivet 580 passes through holes provided in the two fastening portions 520 and has a shape in which both ends are enlarged. The separation preventing means referred to in the present invention is not limited to the rivet 580, and a screw may be used instead of the rivet 580. Alternatively, an adhesive, welding, a fastening wire, or the like can be used as the separation preventing means.

  Next, the process of assembling the LED lighting device 101 will be described below with reference to FIGS.

  First, as shown in FIG. 4, it is assumed that the base 300 and the sockets 401 and 402 are attached to each other. At this time, the base portion 300 is attached to, for example, a ceiling (not shown). Next, the two terminals 251 of the base 250 of the straight tube LED lamp 200 are inserted into the socket 401. Then, the connection movable portion 420 of the socket 401 is pushed by the straight tube LED lamp 200. Thereby, the connection movable part 420 changes from the forward movement state to the backward movement state. When the socket 401 is in the retracted state, the shortest distance between the socket 401 and the socket 402 is increased by the amount by which the connection movable unit 420 is retracted. As a result, the two terminals 251 of the other base 250 of the straight tube LED lamp 200 can be positioned in front of the socket 402. In this state, the straight tube LED lamp 200 releases the pressing of the socket 401 to the connection movable portion 420. As a result, the connection movable part 420 moves forward by the elastic force of the spring 430. As a result, the connection movable portion 420 is brought forward, and the two terminals 251 of the other base 250 are inserted into the socket 402.

  Next, as shown in FIG. 5, a spacer 500 to which a rivet 580 is not yet attached is prepared. Then, the arcuate portion 510 is elastically deformed so that the two fastening portions 520 are separated from each other. The connection movable part 420 of the socket 401 is passed between the two fastening parts 520, and the posture in which the connection movable part 420 is held by the spacer 500 is taken.

  Next, as shown in FIG. 6, the rivet 580 is inserted through the two fastening portions 520. One end of the rivet 580 is already enlarged. Then, after the insertion, the other end of the rivet 580 is deformed to form an enlarged shape. Thereby, the two fastening portions 520 are fastened to each other.

  Next, as shown in FIG. 7, the spacer 500 is rotated about 180 ° along the circumferential direction of the straight tube LED lamp 200. Thereby, the two fastening parts 520 move to the base part 300 side. As a result, the LED lighting device 101 shown in FIGS. 1 to 3 is completed.

  Next, the operation of the LED lighting device 101 will be described.

  According to the present embodiment, the spacer 500 between the straight tube LED lamp 200 and the fixed portion 410 prevents the straight tube LED lamp 200 from moving to the connection movable portion 420 side. For this reason, the connection movable part 420 will continue to take a forward movement state, and it will be prevented from taking a backward movement state. Therefore, it is possible to prevent the straight tube LED lamp 200 from being accidentally removed.

  By covering the connection movable portion 420 protruding from the fixed portion 410 with the spacer 500 in the forward movement state, the movement of the straight tube LED lamp 200 can be appropriately prevented. Since the arcuate portion 510 of the spacer 500 covers the entire circumference of the connection movable portion 420, the movement of the straight tube LED lamp 200 can be appropriately prevented more reliably.

  By fastening the two fastening portions 520, it is possible to prevent the spacer 500 from unintentionally coming off. By using the rivet 580 as the separation preventing means, the spacer 500 can be fastened more reliably. By positioning the two fastening portions 520 on the base portion 300 side, it is possible to prevent the appearance of the LED lighting device 101 from having a unique form.

  By forming the spacer 500 from an elastically deformable material such as resin or metal, the spacer 500 can be easily attached to the connection movable portion 420.

  8 to 11 show another embodiment of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

  8 and 9 show an LED lighting device according to a second embodiment of the present invention. In the LED lighting device 102 of the present embodiment, the configuration of the spacer 500 is different from that of the above-described embodiment.

  In the present embodiment, the spacer 500 includes an arc-shaped portion 510, two leg portions 530, two attachment portions 540, and two screws 590. The arcuate part 510 covers the connection movable part 420 of the socket 401 in the direction of about 180 ° in the circumferential direction of the straight tube LED lamp 200, and is disposed on the side opposite to the base part 300.

  The two leg portions 530 extend from both ends of the arc-shaped portion 510 toward the base portion 300. The two attachment portions 540 extend from the distal end of the leg portion 530 to both sides. Each attachment part 540 is a part attached to the base part 300, and the hole is formed. The two screws 590 are for attaching the two attachment portions 540 to the base portion 300. In the present embodiment, the base portion 300 is formed with a female screw that is screwed into the screw 590. The screw 590 is advantageous in that an operator does not need to work inside the base portion 300 when mounting, but if possible, the mounting portion may be replaced with the above-described rivet 580 instead of the screw 590, for example. 540 may be attached to the base portion 300.

  Also according to such an embodiment, it is possible to prevent the straight tube LED lamp 200 from being removed by mistake. Further, by attaching the attachment portion 540 of the spacer 500 to the base portion 300, the spacer 500 can be prevented from being unintentionally removed.

  FIG. 10 shows an LED lighting device according to a third embodiment of the present invention. The LED lighting device 103 of the present embodiment is different from the above-described embodiment in the configuration of the spacer 500.

  In the present embodiment, one of the two attachment portions 540 is attached to the base portion 300 by the screw 590 as in the above-described embodiment, and the other is engaged with the base portion 300 without using the screw 590. Yes. The base portion 300 is formed with the female screw and the mounting opening 310 described above. The attachment opening 310 is sized and shaped to allow the attachment portion 540 of the spacer 500 to enter the base portion 300.

  When the spacer 500 is attached, the attachment portion 540 and the attachment opening 310 of the base portion 300 are engaged by causing one attachment portion 540 to enter the base portion 300 through the attachment opening 310. Then, the other attachment portion 540 is attached to the base portion 300 with a screw 590. The opening 310 for attachment is located below the connection movable part 420 of the socket 401 in the axial direction of the straight tube LED lamp 200, and hardly protrudes to the left in the figure. For this reason, after the spacer 500 is attached, the attachment portion 540 is not easily removed from the attachment opening 310.

  Also according to such an embodiment, it is possible to prevent the straight tube LED lamp 200 from being removed by mistake. Moreover, the spacer 500 can be attached to the base part 300 more easily.

  FIG. 11 shows an LED lighting device according to a fourth embodiment of the present invention. The LED lighting device 104 of the present embodiment is different from the above-described embodiments in the configuration of the socket 401 and the spacer 500.

  In the present embodiment, the connection movable portion 420 is configured to hardly protrude from the fixed portion 410 in the illustrated forward movement state. When the connection movable part 420 is pushed by the straight tube LED lamp 200, the connection movable part 420 is immersed in the fixed part 410. This state is the retracted state of the connection movable part 420 in this embodiment. The diameter of the connection movable part 420 is slightly larger than the diameter of the straight tube LED lamp 200.

  The spacer 500 includes an interference portion 550 in addition to the arc-shaped portion 510, the two leg portions 530, the two attachment portions 540, and the two screws 590 similar to the LED lighting device 102 described above. In the present embodiment, the arc-shaped portion 510 covers the base 250 of the straight tube LED lamp 200 in an orientation of about 180 ° in the circumferential direction of the straight tube LED lamp 200. Further, the outer peripheral surface of the arc-shaped portion 510 is flush with the outer peripheral surface of the fixing portion 410 of the socket 401.

  The interference portion 550 is a semi-annular plate-like portion extending from the edge of the arc-shaped portion 510 inward in the radial direction of the straight tube LED lamp 200. The interference part 550 is interposed between the base 250 and the socket 401, and overlaps both the fixed part 410 and the connection movable part 420 in the axial direction of the straight tube LED lamp 200. When trying to push the connection movable part 420 with the straight tube LED lamp 200, the interference part 550 interferes with both the fixed part 410 and the connection movable part 420. For this reason, it is prevented that the connection movable part 420 takes a backward state from an advance state.

  Also according to such an embodiment, it is possible to prevent the straight tube LED lamp 200 from being removed by mistake. In addition, unlike this embodiment, it is good also as a form using the opening 310 for attachment in the LED lighting apparatus 103 mentioned above for the attachment form to the base part 300 of one attachment part 540. FIG.

  The LED lighting device according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the LED lighting device according to the present invention can be varied in design in various ways.

101, 102, 103, 104 LED lighting device 200 Straight tube type LED lamp 210 Substrate 220 LED chip 230 Heat radiation member 240 Cover 250 Base 251 Terminal 300 Base portion 310 Mounting opening 401, 402 Socket 410 Fixed portion 420 Connection movable portion 430 Spring 500 Spacer 510 Arc-shaped part 520 Fastening part 530 Leg part 540 Attachment part 550 Interference part 580 Rivet 590 Screw

Claims (22)

A straight tube LED lamp having two bases disposed at both ends in the axial direction;
Two sockets loaded with the two caps,
One of the two sockets is in direct contact with the base and is in a forward state holding the straight tube LED lamp, and is separated from the other socket than in the forward state, whereby the straight tube LED lamp A connecting movable part that takes a retracted state that causes a removable state, and a fixed part that supports the connecting movable part,
An LED lighting device comprising a spacer interposed between the straight tube type LED lamp and a fixed portion and preventing the connection movable portion from taking the backward state from the forward state. The connection movable part protrudes from the fixed part in the advanced state,
The LED lighting device according to claim 1, wherein the straight tube LED lamp does not enter the fixed portion when the connection movable portion is in the retracted state.   The LED lighting device according to claim 2, wherein the spacer covers at least a part of the straight movable LED lamp in the circumferential direction of the connection movable portion in the forward movement state.   The LED illumination device according to claim 3, wherein the spacer covers the entire circumference in the circumferential direction of the straight tube LED lamp among the connection movable parts in the forward movement state.   5. The LED illumination according to claim 3, wherein the spacer has an arc-shaped portion whose both ends are adjacent to each other, and two fastening portions that protrude outward in the radial direction of the straight tube LED lamp from both ends. apparatus.   The LED lighting device according to claim 5, wherein the spacer includes a separation preventing unit that prevents the two fastening portions from separating.   The LED lighting device according to claim 6, wherein the separation preventing means is a rivet or a screw that penetrates the two fastening portions. It has a base that supports the two sockets,
The LED lighting device according to claim 5, wherein the fastening portion is on the base portion side with respect to the connection movable portion.   The LED lighting device according to claim 5, wherein the arc-shaped portion is made of an elastically deformable material.   The LED illumination device according to claim 9, wherein the elastically deformable material is resin.   The LED lighting device according to any one of claims 5 to 10, wherein an outer peripheral surface of the arc-shaped portion is flush with an outer peripheral surface of the base of the straight tube LED lamp. It has a base that supports the two sockets,
The LED lighting device according to claim 3 or 4, wherein the spacer is fixed to the base portion.   The spacer includes an arcuate part located on the opposite side of the base part across the connecting movable part, two leg parts extending from both ends of the arcuate part toward the base part, and these leg parts The LED lighting device according to claim 12, further comprising: two attachment portions connected to the tip of the base portion and attached to the base portion.   The LED lighting device according to claim 13, wherein the two attachment portions are attached to the base portion by rivets or screws.   One of the two attachment portions is engaged with an attachment opening provided in the base portion, and one of the two attachment portions is attached to the base portion by a rivet or a screw. 13. The LED lighting device according to 13. In the longitudinal direction view of the straight tube LED lamp, the connection movable portion is larger than the straight tube LED lamp,
2. The LED lighting device according to claim 1, wherein a part of the straight tube LED lamp enters the fixed portion when the connection movable portion is in the retracted state.   The LED lighting device according to claim 16, wherein the spacer includes an interference portion that overlaps with both the connection movable portion and the fixed portion in the longitudinal direction of the straight tube LED lamp.   The LED lighting device according to claim 17, wherein the spacer includes an arc-shaped portion that is connected to the interference portion and covers the base. It has a base that supports the two sockets,
The LED lighting device according to claim 18, wherein the spacer is fixed to the base portion.   The spacer includes two leg portions extending from both ends of the arc-shaped portion toward the base portion, and two attachment portions that are connected to the tips of the leg portions and attached to the base portion. 19. The LED lighting device according to 19.   The LED lighting device according to claim 20, wherein the two attachment portions are attached to the base portion by rivets or screws.   One of the two attachment portions is engaged with an attachment opening provided in the base portion, and one of the two attachment portions is attached to the base portion by a rivet or a screw. 20. The LED lighting device according to 20.

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