JP2010161046A - Led lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate deterioration of continuity of illuminance by eliminating a dark part of illuminance at a joint, by simplifying the joint (connection) of LED substrates. <P>SOLUTION: Lands 30 are provided to upper and lower parts of end parts of pattern surfaces of print substrates 16 (16a and 16b). End surfaces of two LED substrates 15a and 16b are brought into contact with each other, and copper wires 31 with diameter of 1 mm are mounted between the adjacent lands 30 to solder the copper wires 31 and the lands 30. Thus, the adjacent LED substrates 15a and 15b are linearly joined to each other with almost no space between them by bridging with the copper wires 31 in the form of bridging without interposing a connection terminal (for example, a connector) in a conventional manner, to solder the copper wires 31 and the lands 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an LED illumination device for general illumination that uses a large number of light emitting diodes to replace a fluorescent lamp.

A light-emitting diode (hereinafter referred to as LED) is a safe light source that does not use mercury. In addition to its quick start-up and long life, the light-emitting diode dramatically improves luminous efficiency and replaces fluorescent lamps. As a promising light source.
However, even when LEDs are used as an alternative lighting device for straight tube fluorescent lamps that are widely used for general lighting applications, there are problems as described below.

  That is, in order to connect a large number of LED elements to make a continuous light source that is long like a glass tube of a fluorescent lamp, the maximum length is 30 cm to 40 cm in the manufacture of the LED substrate on which the LED elements are mounted. For example, in order to manufacture a 120 cm light source, several LED substrates had to be connected in a straight line via connection terminals. Since the connection part of the adjacent LED substrate is connected via the connection terminal, a dark part is generated, and there is a problem that the merchantability as an illumination device is inferior.

  FIG. 15 shows a conventional LED board connection structure. A large number of LED elements 81 are mounted substantially linearly on one surface of the LED substrate 80 (80a, 80b), and a connector 82 as a connection terminal is provided at one end of the LED substrate 80a. In addition, a connector 83 that fits with the connector 82 is provided at the other end of the LED substrate 80b.

When the adjacent LED boards 80a and 80b are connected, the connectors 82 and 83 are connected. In this case, since the LED boards 80a and 80b are connected via the connectors 82 and 83, the dimension between the LED elements 81 at the ends of the adjacent LED boards 80 is larger than the dimension between the LED elements 81 of the LED board 80. Therefore, the illuminance is lowered at this portion, and a dark portion is generated.
In addition, the use of connection terminals such as connectors 82 and 83 has a problem of increasing costs.

Further, the conventional fluorescent lamp has a structure in which the lamp can be removed because the lamp is short-lived. Usually, in the case of attaching a fixture to a ceiling or a wall, when attaching the appliance, a method is used in which the appliance is fixed with an attaching screw or the like without attaching the lamp, and then the lamp is attached.
Therefore, it is common that the mounting screw position (hole for screw insertion) is in the back of the lamp on the ceiling or wall.

However, in the lighting device using the LED substrate, the LED substrate and the power supply substrate that drives and drives the LED element of the LED substrate are attached to the fixture in advance, and in this state, the fixture is attached to a surface to be attached such as a ceiling or a wall. It is to be fixed to.
Therefore, a device for installing the lighting device on the surface to be mounted is required in a state where the LED board, the power supply board, and the like are attached to the fixture.

Moreover, in the case of the conventional fluorescent lamp, since the diameter of the lamp is large, the width and the thickness are necessarily increased as a lighting fixture. Therefore, in the case of an LED lighting device using an LED element, it has become larger following the structure of a fluorescent lamp.
In such a case, although the LED element is used, there is a problem that the merit of the small component called the LED element cannot be fully utilized.

The present invention is provided in view of the above-described problems, and provides an LED lighting device having at least the following objects.
(1) Simplifying the connection (connection) of the LED substrates, eliminating the dark portion of the illuminance at the joint, and eliminating the continuity of illuminance.
(2) The lighting device can be installed on a mounting surface such as a ceiling or a wall in a state where an LED substrate, a power supply substrate, and the like are attached to the fixture.
(3) To make the width and thickness of the LED lighting device small and thin.

Therefore, in the LED lighting device according to claim 1 of the present invention, a base 10 attached to the surface 2 to be attached such as a ceiling or a wall, and an LED substrate arranged on the base 10 and having a plurality of LEDs 17 arranged substantially linearly. 15 and a power supply board unit 13 that drives the LED 17 of the LED board 15 to turn on and converts a power source from an AC power source to a DC power source for driving the LED 17 disposed on the base 10. And
The LED boards 15 are composed of a plurality of sheets, arranged in a zigzag pattern, arranged in two or three rows, or arranged in a substantially straight line without connecting the end faces of the adjacent LED boards 15 via a connection terminal. In the state of contact, the diameter is 0.8 mm or more, and one or a plurality of copper wires 31 are bridged between the LED boards 15 and soldered.

In the LED lighting device according to claim 2, the base 10 attached to the mounting surface 2 such as a ceiling or a wall, and a plurality of LEDs 17 arranged on the base 10 are arranged in a substantially straight line, and arranged in a staggered manner, A plurality or one of the LED boards 15 arranged in two or three rows or arranged almost linearly, and the LED 17 of the LED board 15 are driven to turn on, and are arranged on the base 10 and supplied from an AC power source. A power source board unit 13 that converts the power source of the power source into a DC power source for driving the LED 17,
The LED substrate 15 and the power supply substrate unit 13 are juxtaposed, and the height of the surface of the power supply substrate unit 13 parallel to the mounted surface 2 and the light emitting surface of the LED substrate 15 from the base 10 are substantially the same. It is characterized by its height position.

  In the LED lighting device according to claim 3, the two LED boards 15 that are longer than the two power supply board units 13 are arranged in a straight line with a gap in a straight line, and each of the LEDs A power supply board unit 13 corresponding to the board 15 is arranged in the gap, and a hole for attachment to the attachment surface 2 is provided in the gap between the central part and both ends of the two power supply board units 13 surrounded by the LED board 15; The base 10 is characterized in that a through hole for a lead wire from an AC power source, a hole for hanging, and the like are arranged.

In the LED lighting device according to claim 4, the base 10 attached to the mounting surface 2 such as a ceiling or a wall, and the plurality of LEDs 17 arranged on the base 10 are arranged substantially linearly, and arranged in a staggered manner, The LED unit main body 12 having the LED boards 15 arranged in two or three rows and the LEDs 17 of the LED boards 15 are driven to turn on, and the power source from the AC power source arranged on the base 10 is used to drive the LEDs 17. An LED lighting device composed of a power supply board unit 13 for converting into a power supply
The LED unit main body 12 includes the LED substrate 15, a channel 35 having a substantially U-shaped cross section in which the LED substrate 15 is disposed, and an opening at both ends, and a resin 37 filled in the channel 35. A plug 36 is provided, which is configured to close and fit the opening portions at both ends of the channel 35.

According to the LED lighting device of the first aspect of the present invention, in a state where the end faces of the LED substrates 15 that are linearly adjacent to each other are in contact with each other, the diameter is 0.8 mm or more, and one or more Since the copper wire 31 is bridged between the LED boards 15 and soldered, there is not much difference between the dimension between the LEDs 17 of the LED board 15 and the dimension of the LED 17 between the ends of the adjacent LED boards 15a and 15b. It is possible to eliminate the dark portion in the portion between the LEDs 17 of the adjacent LED boards 15a and 15b, and the same continuous illuminance can be obtained. Therefore, merchantability as the LED lighting device 1 is not impaired.
In addition, since the adjacent LED substrates 15a and 15b are connected (to be connected) with the copper wire 31 without using the connection terminal as in the prior art, the structure can be simplified and the cost can be reduced. Can be.

  According to the LED lighting device of claim 2, the LED substrate 15 and the power supply substrate unit 13 are arranged in parallel, the surface of the power supply substrate unit 13 parallel to the mounted surface 2, and the light emission of the LED substrate 15. Since the height of the surface from the base 10 is substantially the same height position, when the LED 17 emits light, the power supply board unit 13 does not get in the way even if the light is irradiated sideways. Light can be irradiated uniformly over the entire side and bottom surface.

  According to the LED lighting device of claim 3, the base 10 is suspended through the various holes 60 to 63 in a state where the LED board 15, the power supply board unit 13, and the like are attached to the base 10. The connection with the cord can be performed, and the LED lighting device 1 can be installed on the mounting surface 2 such as a ceiling or a wall.

  According to the LED lighting device of the fourth aspect, the plug 36 can be positioned in the channel 35 by simply plugging the plug 36 into the opening at the end of the channel 35, and the resin 37 is placed in the channel 35. Even if it is filled, the resin 37 can be prevented from flowing out by the stopper 36. Further, the channel 35 does not need to be cut at all, and it is not necessary to use an adhesive, so that the manufacturing cost of the LED unit body 12 can be reduced.

(A) and (b) are the front views and side sectional views of the LED lighting device in the embodiment of the present invention. It is a principal part expanded sectional view of the LED lighting apparatus in embodiment of this invention. It is a principal part expanded sectional view of the LED lighting apparatus in embodiment of this invention. (A) (b) is the top view and front view of a power supply board unit in embodiment of this invention. (A) (b) is explanatory drawing in the case of connecting the LED board in embodiment of this invention. It is explanatory drawing of the hole for power supplies etc. of the base in embodiment of this invention. It is a figure which shows the state by which the hole for power supplies is arrange | positioned at the time of attaching the LED unit main body and the power supply board unit to the base in embodiment of this invention. It is explanatory drawing which shows the state which has block | closed the resin in a channel with the stopper in embodiment of this invention. It is a principal part perspective view of a channel. It is a figure which shows the state which cut the edge part of the conventional channel. It is a perspective view of the member for preventing the outflow of the resin in the conventional channel. It is a principal part perspective view using the member for preventing the outflow of the resin in the conventional channel. It is a perspective view of a stopper and a channel in an embodiment of the invention. It is a figure which shows the state which carried out obstruction | occlusion fitting of the end part of the channel in the stopper in embodiment of this invention. It is a figure which shows the connection part of the LED board of a prior art example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a state in which the LED lighting device 1 is installed on a mounting surface 2 such as a ceiling or a wall, FIG. 1 (a) is a front view of the LED lighting device 1, and FIG. 1 (b) is a side sectional view. Respectively. 2 shows an enlarged view of the main part of the LED lighting device 1, and FIG. 3 shows an enlarged side sectional view.

As shown in FIGS. 1 to 3, the outer shell of the LED lighting device 1 is made of metal and has a substantially flat base 10, and a translucent cover 11 that is detachably attached to the lower surface side of the base 10. It consists of and. The base 10 is screwed and fixed to the mounting surface 2 with screws or the like, and the cover 11 is formed in a box shape having an open top surface.
On the base 10, two LED unit main bodies 12 (12a, 12b) and a power supply board unit 13 (13a, 13b) for driving the LED board unit 12 are arranged.

The LED board unit 14 (14a) constituting the LED unit main body 12 is constituted by connecting two long LED boards 15 (15a, 15b) in a straight line here, and the other The LED board unit 14b has the same configuration.
The LED substrate 15 includes a printed circuit board 16 having a pattern formed on the back surface and a large number of LEDs 17 mounted on the front surface of the printed circuit board 16. The array of the large number of LEDs 17 is performed in any one of linear, staggered, 2-3 rows, or a combination thereof.

4A and 4B show a power supply board unit 13 that converts a power source from an AC power source wired from the mounting surface 2 into a DC power source for driving the LED 17, wherein FIG. 4A is a plan view and FIG. 4B is a front view. Show. As shown in FIG. 4, various electronic parts such as an IC, a capacitor, and a resistor for driving the LED 17 to be lit are mounted on the long printed circuit board 20 and is used for heat dissipation of the IC. A silicon sheet 21 and aluminum radiating fins 22 are arranged.
In addition, above each electronic component, a flat plate-like heat radiation fin 24 made of aluminum is provided via a resin spacer 23. Further, a pair of power cables 25 are led out from one end of the printed circuit board 20, and a pair of LED connections for supplying power to the LED board unit 14 from the other end of the printed circuit board 20. Cable 26 is led out.

  Next, the structure in the case of connecting two LED substrates 15 will be described. FIG. 5A shows a state before the LED board 15 (15a, 15b) is connected, and lands 30 are provided above and below the end of the pattern surface of the printed board 16 (16a, 16b). Then, as shown in FIG. 5B, the end faces of the two printed boards 16a and 16b (LED boards 15a and 15b) are brought into contact with each other, and a copper wire 31 having a diameter of 1 mm between adjacent lands 30 is provided. The copper wire 31 and the land 30 are soldered. In addition, the number 32 shown in FIG. 2 has shown the soldering part.

As a result, the adjacent LED boards 15a and 15b are bridged in such a manner as to be bridged by the copper wire 31 without using connection terminals (for example, connectors) as in the prior art, and the copper wire 31 and the land 30 are soldered. By attaching, it can be connected in a straight line with almost no gap.
Therefore, as shown in FIG. 2, the dimension between the LEDs 17 of the LED board 15 and the dimension of the LED 17 between the ends of the adjacent LED boards 15 a and 15 b can be made not so much different, and the adjacent LED boards 15 a, A dark part does not occur in the portion between the LEDs 17 of 15b, and the same continuous illuminance can be obtained. Therefore, merchantability as the LED lighting device 1 is not impaired.
In the above embodiment, the electronic components such as the LEDs 17 are mounted on the printed board 16 and then the LED boards 15 are connected. However, the printed boards 16 are connected to the copper wire 31 before mounting the electronic components. May be connected.

  In addition, since the adjacent LED substrates 15a and 15b are connected (to be connected) with the copper wire 31 without using the connection terminal as in the prior art, the structure can be simplified and the cost can be reduced. Can be.

  One or three or more copper wires 31 may be used, and the diameter of the copper wire 31 is about 0.8 mm to 4, 5 mm. If it is less than 0.8 mm, the rigidity is weak, and even if it is 5 mm or more, no more rigidity is required, and the economic effect is poor. Therefore, in terms of cost, the diameter of the copper wire 31 is preferably 1 mm.

  Next, the configuration of the LED unit body 12 will be described. As shown in FIG. 3, the outer shell is composed of a metal channel 35 (see FIG. 13) having a substantially U-shaped cross section, and the opening surfaces at both ends of the channel 35 are made of rubber or resin. It is blocked by a plug 36 (see FIG. 8). The LED board unit 14 configured by connecting the LED board 15 is placed in the channel 35, and as shown in FIG. 2, the LED board unit 14 and the bottom surface of the channel 35 (the ceiling in the installed state of the LED lighting device 1). A spacer 45 having a screw threaded on the inner peripheral surface, and screws 44 and 46 are inserted from the mounting surface of the LED board unit 14 and the bottom surface of the channel 35, respectively. The LED board unit 14 is fixed in the channel 35 by being screwed onto the screw of the spacer 45.

  In such a case, the LED board unit 14 is arranged and fixed in the channel 35 in a state where the light emitting portion of the LED 17 is exposed from the opening surface of the channel 35. The resin 37 (shaded portion in FIG. 3) is filled and the resin 37 is cured, so that the LED board unit 14 is completely fixed in the channel 35.

  The LED board unit 14 is attached to the base 10 by screwing the screw 40 inserted from the upper surface of the base 10 through the spacer 41 and further inserting the tip of the screw 40 through the channel 35 and the plug 36 and screwing the nut 42. The LED board unit 14 is attached to the base 10.

  The power supply board unit 13 is attached to the base 10 as follows. That is, as shown in FIG. 3, the box-like case 50 constituting the outer shell of the power supply board unit 13 is a long object, and the lower part protrudes on both sides so that the ribs 51 are integrated over substantially the entire length. Is formed. In addition, mounting pieces 52 are integrally formed on the upper ends of both ends of the case 50 of the power supply board unit 13, and the power supply board unit 13 is fixed to the base 10 with screws 53 and nuts 54 through the attachment pieces 52. Is done.

  At this time, the LED unit main body 12 is juxtaposed to the base 10 and fixed first, and then the power board unit 13 is inserted and disposed in the space portion of the LED unit main body 12 arranged side by side. The ribs 51 of the case 50 are disposed so as to receive the lower surface of the LED unit main body 12. The power supply board unit 13 is fixed to the base 10 with screws 53 and nuts 54 via the mounting pieces 52.

Further, the rib 51 of the power supply board unit 13 is formed thin, and the height position of the lower surface 55 of the power supply board unit 13 and the lower surface of the LED 17 of the LED unit body 12 are substantially the same height position. I have to.
Thereby, when LED17 light-emits, even if light is irradiated toward a side, the power supply board unit 13 does not become obstructive, and can irradiate light uniformly over the whole side and lower surface.

  Further, since the LED unit main body 12 on both sides is received by the rib 51 of the case 50 of the power supply board unit 13, the screw 40 and the nut 42 fixing the LED unit main body 12 are caused by some cause. Even if the LED unit body 12 is loosened, it is possible to prevent the LED unit main body 12 from falling off and the height position from being changed.

  As shown in FIG. 3, after the LED unit main body 12 and the power supply board unit 13 are attached to the base 10, the cover 11 is attached to the base 10, and the screw 57 is screwed into the screw hole 56 screwed into the upper part of the cover 11. The cover 11 is detachably fixed to the base 10.

As shown in FIG. 6, the base 10 has a power hole 60 into which the power cord from the mounting surface 2 is inserted at the center and both ends, and a hanging tool for the LED lighting device 1 hanging tool that is drilled on both sides. A hole 61, a pair of mounting bolt holes 62 through which mounting bolts are inserted, and a pair of mounting wood screw holes 63 through which mounting wood screws are inserted are provided.
Here, when the length of the LED lighting device 1 is 1200 mm, the length of the base 10 is equally 1200 mm, the dimension between the mounting bolt holes 62 is 800 mm, and the dimension between the mounting wood screw holes 63 is 900 mm. It has been decided.

Therefore, in the present embodiment, as shown in FIG. 7, even when the LED lighting device 1 is set to 1200 mm in length and the LED lighting device 1 is installed at a place where the fluorescent lamp lighting device is installed, there is no problem. The arrangement of the LED unit main body 12 and the power supply board unit 13 is devised so that the LED lighting device 1 can be installed without any problem.
That is, the LED unit main body 12 is configured by connecting a plurality of LED substrate units 14 so that the length of the LED unit main body 12 corresponds to the length of the LED unit main body 12 (corresponding to the illuminance).

  The LED unit main body 12 shown in FIG. 1 shows a case where two LED board units 14 are connected in a straight line, but in FIG. 7, four LED board units 14 are connected in a straight line. One LED unit main body 12 is constituted.

Then, two LED unit main bodies 12 longer than two power supply board units 13 are arranged approximately parallel to each other so as to form a linear gap 65 and not to block the various holes 60 to 63. Two power supply board units 13 are arranged in the gap 65 at a position where the holes 60 to 63 are not present.
That is, holes 62 and 63 such as screws attached to the ceiling or the wall, and a hole 60 through which a power line from an AC power source is passed, in the gap 65 between the center portion and both ends of the two power supply board units 13 surrounded by the LED unit main body 12. In addition, a suspension hole 61 and the like are provided in the base 10.

  Accordingly, the base 10 can be suspended through the various holes 60 to 63 or connected to the power cord with the LED unit main body 12, the power board unit 13 and the like attached to the base 10, and the LED illumination can be performed. The apparatus 1 can be installed on a surface 2 to be attached such as a ceiling or a wall.

In addition, the LED lighting device 1 according to the present embodiment includes the LED unit main body 12 and the power supply board unit 13 that are thin and narrow in width and thickness without following the structure of the conventional fluorescent lamp. The width and thickness of the LED lighting device 1 can be made small and thin.
In addition, when not using the cover 11, as shown in FIG. 3, the thickness of the LED lighting apparatus 1 can be made still thinner.

  In addition, in the said embodiment, although the case where the LED unit main body 12 was arrange | positioned at linear form in the longitudinal direction was shown, it arrange | positions several LED unit main bodies 12 in zigzag form, or arranges in 2 to 3 rows. May be.

As shown in FIG. 8, in this embodiment, when the LED board unit 14 is disposed in the channel 35 and the resin 37 is filled in the channel 35, the resin 37 is smooth and flows out to the outside. In order to prevent this, the plug 36 is used, but conventionally, the plug 36 of this form has not been used.
FIG. 9 shows a perspective view of the main part of the channel 35, and the end portions of the side walls 35a on both sides of the channel 35 are removed by cutting as shown in FIG. A member 70 bent into an L shape was disposed. The recess 71 at the top of the member 70 is for inserting a lead wire or cable connected to the LED board unit 14.

When the member 70 is disposed in the channel 35, an adhesive is applied to the end face 35b of the channel 35 shown in FIG. 10 or the bottom surface of the channel 35, and the member 70 is bonded and fixed as shown in FIG. The resin 37 was filled inside.
However, this process requires a lot of time and cost for cutting the side wall 35a of the channel 35, processing the metal member 70, and the like, and the cost is high.

Therefore, in this embodiment, as shown in FIG. 13, a rubber or metal plug 36 that fits in the channel 35 is formed, and this plug 36 is directly fitted into the channel 35 as shown in FIG. Therefore, the resin 37 is filled into the channel 35.
That is, as shown in FIG. 14, the plug 36 can be positioned in the channel 35 by simply closing and fitting the plug 36 into the opening portion at the end of the channel 35, and the resin 37 is filled in the channel 35. The plug 36 can prevent the resin 37 from flowing out.

  Further, the channel 35 does not need to be cut at all, and it is not necessary to use an adhesive, so that the manufacturing cost of the LED unit body 12 can be reduced. The LED connection cable 26 is led out to the outside through recesses 73 and 74 formed in the upper part of the plug 36.

The material of the plug 36 is preferably made of rubber. By making the width dimension of the plug 36 slightly larger than the width dimension of the channel 35, it becomes easy to fix the plug 36 to the channel 35, and even if the resin 37 is filled, the frictional force is large, so the channel 35. The plug 36 does not come off easily. Moreover, it is only necessary to fit the plug 36 to the channel 35, and the plug 36 can be easily attached to the channel 35.
The holes 75 and 76 formed in the channel 35 and the plug 36 are holes for inserting the screws 40 for fixing the LED unit main body 12 to the base 10.

DESCRIPTION OF SYMBOLS 1 LED lighting apparatus 2 Attached surface 10 Base 12 LED unit main body 13 Power supply board unit 14 LED board unit 15 LED board 17 LED
31 Copper wire 35 Channel 36 Plug 37 Resin

Claims (4)

A base (10) attached to a mounting surface (2) such as a ceiling or a wall; an LED substrate (15) arranged on the base (10) and having a plurality of LEDs (17) arranged substantially linearly; and the LED An LED (17) of the substrate (15) is driven to light, and is configured with a power supply substrate unit (13) that is disposed on the base (10) and converts a power source from an AC power source to a DC power source for driving the LED (17). LED lighting device,
The LED board (15) is composed of a plurality of sheets, arranged in a zigzag pattern, arranged in two or three rows, or arranged in a substantially straight line so that the end faces of adjacent LED boards (15) are connected to each other. The diameter is 0.8 mm or more in a state where the contact is made without interposing the wire, and one or a plurality of copper wires (31) are bridged between the LED substrates (15) and soldered. LED lighting device characterized. A base (10) to be attached to a mounting surface (2) such as a ceiling or a wall, and a plurality of LEDs (17) arranged on the base (10) are arranged in a substantially straight line and arranged in a staggered manner, A plurality of or one LED board (15) arranged in three rows or arranged substantially linearly, and the LED (17) of the LED board (15) are driven to light, and the base (10 And a power supply board unit (13) that converts a power source from an AC power source into a DC power source for driving the LED (17),
The LED substrate (15) and the power supply substrate unit (13) are juxtaposed, and the surface of the power supply substrate unit (13) parallel to the surface to be mounted (2) and the light emitting surface of the LED substrate (15) The LED lighting device characterized in that the height from the base (10) is substantially the same height position.   Two LED boards (15) that are longer than the two power supply board units (13) are arranged in a straight line with a gap in between, and correspond to each LED board (15). The power supply board unit (13) is disposed in the gap, and is attached to the attachment surface (2) in the gap between the central part and both ends of the two power supply board units (13) surrounded by the LED board (15). The LED illumination device according to claim 2, wherein the base (10) is provided with a hole, a through hole for a lead wire from an AC power source, a hole for hanging, and the like. A base (10) to be attached to a mounting surface (2) such as a ceiling or a wall, and a plurality of LEDs (17) arranged on the base (10) are arranged in a substantially straight line and arranged in a staggered manner, An LED unit main body (12) having LED substrates (15) arranged in parallel in three rows, and an LED (17) of the LED unit main body (12) are driven to turn on and arranged on the base (10) to be an AC power source A power source board unit (13) for converting the power from the power source to a DC power source for driving the LED (17),
The LED unit main body (12) includes the LED substrate (15), a channel (35) having a substantially U-shaped cross section in which the LED substrate (15) is disposed, and an open channel (35). ) And resin (37) filled in,
An LED lighting device comprising a plug (36) for closing and fitting the opening portions at both ends of the channel (35).

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