JP2012009285A - Led illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology in order to achieve that in an LED illumination device wherein a lengthy LED substrate in which numerous LEDs are arranged is housed in a longitudinal direction in a translucent tube body, which is equipped with end part caps having terminals at the end parts of the tube body, and which supply electric power to the LEDs via lead wires soldered to the terminals, even in the case the lead wire is pulled, bent, and twisted, its action force is not directly applied to a soldered place, and in the case of adopting a constitution to insert and support the LED substrate in insertion grooves formed in the tube body, the lead wire is not damaged by movement of the LED substrate.SOLUTION: The tube body is cylindrically formed by extrusion molding, and at its interior counter positions, paired support grooves are respectively formed extendedly existing in a longitudinal direction in order to insert and support the counter end parts of the LED substrate. Each of the end part caps includes: a locking part to bend and lock the middle of the lead wires; and a stopper part in order to prevent that each of the longitudinal direction end parts of the LED substrate inserted and supported in the paired support grooves is abutted on bent parts of the lead wires bent and locked by the locking part.

Description

The present invention relates to an LED lighting device in which a long strip plate-like substrate on which a large number of LEDs (light emitting diodes) are arranged is housed in a tube, and in particular, a lead wire for electrically connecting left and right terminals and the substrate. The present invention relates to an LED lighting device that achieves stable holding.

A long LED mounting substrate 3 in which a large number of LEDs are arranged in a transparent or translucent tube 1;
A circuit board 5 to which the LED mounting board 3 is attached is provided so as to extend in the longitudinal direction of the tube body 1,
A base 9 is attached to both ends of the tube body 1 so as to close the inside of the tube body 1, and a terminal portion that is fitted and attached to a socket portion for mounting a conventional straight tube fluorescent lamp. 10 is attached, and the circuit board 5 and the terminal portion 10 are electrically connected by lead wires, and are straight tube type LEDs.
There is an illumination device (see Patent Document 1).

JP 2010-44920 A

As a first method, both ends of the lead wire are soldered to the circuit board 5 and the terminal portion 10, respectively, and the circuit substrate 5 and the terminal portion 10 are electrically connected by the lead wire. Further, as a second method, the terminal portion 10 and the lead wire are soldered in consideration of ease of assembly, but the circuit board 5
The lead wire may be connected by a detachable connector.

In any of these methods, the base 9 is attached to both ends of the tubular body 1 with the base portion of the base 9 to which the terminal portion 10 is attached being inserted at both ends of the tubular body 1. Before the mounting operation, both ends of the lead wire are soldered to the circuit board 5 and the terminal portion 10 and electrically connected by the lead wire, and when the lead wire is pulled or bent during the mounting operation, The acting force is applied to the soldering portion, and there is a possibility that poor electrical connection such as peeling off of the soldering portion or a poor contact state may occur.

In the case of the second method, before attaching the base 9 to both ends of the tube 1,
The other end of the lead wire to which the connector is attached at one end is soldered to the terminal portion 10, and the acting force when the lead wire is pulled or bent during the attaching operation is applied to the soldering portion, There is a risk that poor electrical connection may occur, such as peeling off of the attachment part or contact failure.

Moreover, in the structure which arranged many LED on the single side | surface of the elongate LED mounting board 3 like patent document 1, since the irradiation angle of LED will be about 120 degree | times, depending on the attachment state of LED lighting apparatus, it is predetermined. It may be difficult to irradiate in the direction of. In this case, it is conceivable to adopt a configuration in which the direction of the surface on which the LEDs of the LED mounting substrate 3 are arranged is changed and the light is irradiated in a predetermined direction. In this case, the lead wire is twisted, but the acting force of the twist is applied to the soldered portion between the terminal portion 10 and the lead wire, and this soldered portion is peeled off or a poor contact state occurs. May occur.

In view of such a point, the present invention is such that even if the lead wire is pulled, bent, or twisted, the acting force is not directly applied to the soldering location, and the soldering location is peeled off, The present invention provides a technique for preventing a poor electrical connection such as a poor contact state.

In addition, the present invention employs a technique for inserting and supporting an LED mounting board in an insertion groove formed in a long tubular body, together with a technique for preventing the above-described electrical connection failure.
A technique for preventing a lead wire extending from a base from being damaged by movement of an ED mounting substrate is provided.

According to a first aspect of the present invention, there is provided a terminal portion that is accommodated so that a long LED substrate on which a large number of LEDs are arranged extends in a longitudinal direction in a tubular body that is at least partially translucent, and is fitted to a socket portion. In the LED lighting device in which the end caps provided are attached to both ends of the tube body, and power is supplied to the LEDs via lead wires soldered to the terminal portions.
The end cap is provided with a locking portion that bends and locks the middle of the lead wire, and absorbs pulling or bending of the lead wire applied to the soldered portion by the bending locking.

According to a second aspect of the present invention, in the first aspect, the terminal portion is composed of two pieces to which AC power supplied from the socket portion is applied, and the lead wires are connected to the two terminal portions, respectively. Synthetic resin comprising two pieces, and the end cap is integrally formed so that the locking portions face each other so that the middle of the two lead wires is locked in a S-shaped bend It is made of.

According to a third aspect of the present invention, there is provided a terminal portion that is accommodated so that a long LED substrate on which a large number of LEDs are arranged extends in a longitudinal direction in a tubular body that is at least partially translucent, and is fitted to a socket portion. In the LED lighting device in which the end caps provided are attached to both ends of the tube body, and power is supplied to the LEDs via lead wires soldered to the terminal portions.
The tubular body is formed into a cylindrical shape by extrusion molding, and a pair of support grooves are formed at positions facing the inner surface of the tubular body so as to extend in the longitudinal direction of the tubular body and to insert and support the opposed end portions of the LED substrate. ,
In the end cap, a locking portion that is bent and locked in the middle of the lead wire and a longitudinal end portion of the LED substrate that is inserted and supported in the pair of support grooves are bent and locked by the locking portion. In addition, a stopper portion for preventing contact with the bent portion of the lead wire is provided.

According to the first invention, even if the lead wire is pulled, the lead wire is hooked on the locking portion, and the pulling force is not applied to the soldered portion of the terminal portion and the lead wire, so that the soldered portion is peeled off or the contact is poor. Therefore, it is possible to prevent a poor electrical connection. In addition, the lead wire bends when the end cap is attached to both ends of the tubular body, but since the middle of the lead wire is bent and locked to the locking portion, the acting force generated when this lead wire is bent However, the bending force of the lead wire is absorbed, and the acting force due to the bending is not applied to the soldering portion through the lead wire, and the soldering portion is not peeled off or the contact is not poor, resulting in poor electrical connection. Can be prevented.

In the second invention, since the middle of the two lead wires is locked in a state of S-shape bending, the lead wire is bent and locked, and the lead wire pulling or bending applied to the soldered portion is absorbed. To improve the effect. In addition, since the end caps are integrally formed so that the locking portions face each other, the bent locking state of the two lead wires can be stably held, and the formation of a strong locking portion is facilitated.

In the third aspect of the present invention, the end cap is provided with a locking portion that bends and locks the middle of the lead wire, and peeling or contact of the soldered portion is caused by the acting force when the lead wire is pulled or the lead wire is bent. In the case of preventing the failure, in order to simplify the support structure of the LED substrate in the tube, when adopting a configuration in which the support groove of the LED substrate is formed simultaneously with the extrusion of the tube on the inner surface of the tube The end portion of the LED board in the tube body is limited by the stopper provided on the end cap, so that the end portion of the LED board abuts against the bent lead wire. This can prevent damage.

It is an external view of the LED lighting apparatus which concerns on this invention. It is state explanatory drawing of the board | substrate accommodated in the tubular body of the LED lighting apparatus which concerns on this invention. It is a state explanatory view of the LED board stored in the tube body seen from the Y direction of FIG. It is a perspective view which shows the relationship between the edge part cap of the LED lighting apparatus which concerns on this invention, and the board | substrate accommodated in the tubular body. It is a perspective view which shows the arrangement | positioning state of the lead wire of the edge part cap of the LED lighting apparatus which concerns on this invention. It is a side view of the edge part cap of the LED lighting apparatus which concerns on this invention. It is an arrangement | positioning state figure of the lead wire in the edge part cap of the LED lighting apparatus which concerns on this invention. It is AA sectional drawing of FIG. It is a disassembled perspective view which shows the relationship between the edge part cap, LED board, and tubular body of the LED lighting apparatus which concerns on this invention. It is a connection diagram in the case of replacing the LED illumination device according to the present invention with a glow tube lighting type straight tube fluorescent lamp illumination device. It is a connection diagram in the case of replacing the LED lighting device according to the present invention with a rapid start lighting type straight tube fluorescent lamp lighting device. It is a connection diagram in the case of attaching the LED lighting device according to the present invention to a dedicated socket.

The present invention includes a terminal portion that is accommodated so that a long LED substrate on which a large number of LEDs are arranged is extended in a longitudinal direction in a tubular body that is at least partially transparent, and is fitted to a socket portion. In the LED lighting device in which the end caps are attached to both ends of the tubular body, and power is supplied to the LEDs via lead wires soldered to the terminal portions.
The end cap is provided with a locking portion that bends and locks the middle of the lead wire, and absorbs pulling or bending of the lead wire that is applied to the soldered portion by the bending lock,
Examples of the present invention will be described below.

The LED lighting device 1 according to the present invention is attached to a socket (shown by a dotted line in FIGS. 10 to 11) in place of a straight tube fluorescent lamp of a conventional straight tube fluorescent lamp lighting device. However, the present invention is not limited to this, and can also be applied to a lighting fixture including a dedicated socket 12 (shown by a dotted line in FIG. 12) to which the LED lighting device 1 according to the present invention is attached. It becomes a lighting device.

Below, LED lighting device 1 concerning the present invention is explained based on a figure. The LED lighting device 1 includes a long LED substrate 3 on which a large number of LEDs (light emitting diodes) 2 are arranged, and a longitudinal direction in a straight tube 4 in which at least a part is translucent (the long axis of the tube 4). And a terminal portion 5 that is fitted and attached to a socket portion 12 (shown by a dotted line in FIGS. 10 to 12) of a straight tube fluorescent lamp lighting device or the like that is housed so as to extend in the direction). End caps 6 are attached to both ends of the tube 4, and predetermined power is supplied to the LED 2 via the lead wire 7 soldered to the terminal portion 5.
Emits light.

In the tube 4, an LED drive circuit board 8 is housed in addition to the LED board 3, and is supported by an appropriate support structure. The LED board 3 is made of a flat synthetic resin, and a large number of LEDs 2 are arranged so that one side surface thereof becomes the illumination side surface 3P, and the other side surface (back surface) opposite to the illumination side surface 3P is provided with the LED 2 Plate-shaped LE with electric circuit elements for supplying power to
A D drive circuit board 8 is attached to the LED board 3 in parallel with the LED board 3.
In the embodiment, as shown in FIGS. 1 to 3, the LED lighting device 1 is attached to a ceiling portion of a room and illuminates the lower part, and the lower side surface of the LED substrate 3 is an illumination side surface 3P. It is the structure arranged in this way.

On the illumination side surface 3P of the LED substrate 3, a large number of LEDs 2 electrically connected in series in a row are arranged in a straight line, and a total of 306 LEDs 2 are arranged in three rows at a predetermined interval. Yes. The LED lighting device 1 shown in the embodiment has a length L of approximately 1200 mm, and forming the LED substrate 3 having a length corresponding to this length with a single substrate increases the cost. In the example, three unit substrates A, B, and C are connected in series to constitute the LED substrate 3. Therefore, each of the unit boards A, B, and C is in a state where 34 LEDs 2 in one row are arranged in three rows at a predetermined interval, and the LEDs 2 in each row of the unit boards A, B, and C are electrically Are connected in series, and 306 LEDs 2 as a whole have a three-row configuration.

Since the light emitted from the LED 2 is transmitted through the tubular body 4, the upper region 4U is opaque from the line PL indicated by the alternate long and short dash line in FIG. 1, and the lower region 4D is transparent or translucent (including colored or milky white) from the line PL. A cylindrical shape formed by extrusion molding or pultrusion molding of a synthetic resin material or a cylindrical shape close thereto is formed so as to achieve the light-transmitting properties. LED2 mounted on flat lighting side 3P
Since the irradiation angle due to the light emission is approximately 120 degrees, considering the irradiation angle of the light of the LED 2 in each column at both ends of the three columns attached to the flat illumination side surface 3P and the reflected light from the tube body 4, The tubular body 4 may be configured such that the lower region 4D substantially corresponding to the LED substrate 3 is translucent. If the upper region 4U is opaque, the LED driving circuit board 8 above the LED board 3 and the electric circuit elements attached thereto are invisible from the outside, which is a preferable form in appearance. There are various methods for making the upper region 4B opaque simultaneously with the formation of the tube body 4. For example, a method of forming a large number of fine streaks in the upper region 4U of the tube body 4 may be used.

The terminal portions 5 of the end caps 6 attached to both ends of the tube body 4 are each provided with two pins. This is a socket portion 12 of a conventionally used straight tube fluorescent lamp illumination device. This is because it is configured to be fitted and mounted (shown by dotted lines in FIGS. 10 to 12). For this reason, it replaces with a straight tube | pipe type fluorescent lamp, and the socket part 12 of the LED illuminating device 1 is used for a straight tube | pipe type fluorescent lamp illuminator.
When the straight tube type fluorescent lamp is lit with the glow tube method when fitted to the tube, FIG.
As shown in 0, the glow tube is removed, and a new bypass connection 13 is connected in a state where the wiring to the ballast is disconnected as indicated by a cross. In this state, the LED lighting device 1
Is inserted into the socket portion 12, and commercial AC power AC passes through the bypass connection 13 and either one of the two pins of the terminal portion 5 on one side (left side in FIG. 10) of the tube body 4. On the other hand,
It is supplied to either one of the two pins of the terminal portion 5 on the other side (right side in FIG. 10) of the tube body 4.

In the case of a rapid start method in which straight tube fluorescent lamps are not lit with a glow tube method, FIG.
As shown in FIG. 1, a new bypass connection 13 is connected in a state where the wiring to the ballast is disconnected as indicated by a cross. In this state, when the LED lighting device 1 is fitted and attached to the socket portion 12, the commercial AC power AC passes through the bypass connection 13 and the 2 of the terminal portion 5 on one side (left side in FIG. 11) of the tubular body 4. One of the two pins and one of the two pins of the terminal portion 5 on the other side (right side in FIG. 11) of the tube body 4 are supplied.

FIG. 12 shows a dedicated socket system for the LED lighting device 1. In this case, the LED
When the lighting device 1 is fitted and attached to the dedicated socket portion 12, commercial AC power AC is transferred from the dedicated socket portion 12 to the two pins of the terminal portion 5 on one side (left side in FIG. 12) of the tube body 4. The wiring is supplied to either one of them and one of the two pins of the terminal portion 5 on the other side (right side in FIG. 12) of the tube body 4.

In this way, an LED driving circuit having an electric circuit element S for supplying power to the LED 2 in order to cause the LED 2 to emit light by the commercial AC power AC supplied to the terminal portions 5 at both ends of the LED lighting device 1. A substrate 8 is provided. On the circuit board 8 for LED drive, a board-side connector 11A connected to the terminal-side connector 11B on the lead wire 7 side is disposed on the left and right terminal portions 5, respectively. The board-side connector 11A and the terminal-side connector 11B are connected to each other. In this state, commercial AC power AC is supplied to the electric circuit element S of the LED drive circuit board 8 from the left and right terminal portions 5 via the lead wires 7. As this electric circuit element S, a rectifier circuit for rectifying commercial AC power AC supplied from the left and right terminal portions 5 via the lead wires 7 to a predetermined DC DC is provided on the LED drive circuit board 8. AC / DC conversion circuit unit 9 including AC / DC,
A voltage control unit 10 is provided that supplies the direct current DC supplied from the DC conversion circuit unit 9 to the LED 2 as a predetermined voltage.

In order to support the LED substrate 3 in the cylindrical tube 4, a pair of opposed supports extending in the length direction of the tube 4 (the axial direction of the tube 4) are provided on the inner surface of the cylindrical tube 4. The groove 4 </ b> A is formed simultaneously with the formation of the tube body 4. As shown in FIGS. 7 and 8, the pair of support grooves 4 </ b> A are respectively provided to the tube bodies 4.
Are formed between a pair of opposing ribs 4B and 4B extending in the length direction (the axial direction of the tube 4). The distance between the pair of ribs 4B and 4B is slightly larger than the thickness of the LED substrate 3. At the same time as the tube 4 is formed, the tube 4 is formed over the entire length. A pair of support grooves 4A
As shown in FIGS. 7 and 8, the LED substrate 3 supported by is positioned slightly below the upper and lower central portions of the inner tube body 41. This is because the irradiation angle of the LED 2 attached to the illumination side surface 3P as described above is approximately 120 degrees, and the LED drive circuit board 8 to which the electric circuit element S is attached is disposed on the back side of the LED board 3. This is because the storage in the state is considered.

The end cap 6 is formed in a cylindrical shape with a synthetic resin material that is an electrical insulating material in order to match the cylindrical tube body 4. The terminal portion 5 is connected to one end of the lead wire 7 provided with the terminal-side connector 11B by soldering in a state where the terminal portion 5 is attached to the terminal support member 14 made of an electrical insulating material. The terminal support member 14 is attached to the end cap 6 by attaching a cup-shaped metal appearance member 14A integrally combined with the terminal support member 14 to the outer surface of the annular attachment portion 6A at the outer end of the end cap 6. It is done.

As shown in FIG. 4, the width T1 of the LED drive circuit board 8 to which the electric circuit element is attached is L
It is set to be sufficiently smaller than the width T2 of the ED substrate 3, and has an arrangement in which long end edges 3A extending in parallel in the longitudinal direction of the LED substrate 3 are present on both sides of the width T1 of the LED drive circuit substrate 8, LE
The D drive circuit board 8 is attached to the back side of the LED board 3. In such a configuration,
As shown in FIG. 9, the long end 3 </ b> A of the LED board 3 is slid into a pair of support grooves 4 </ b> A in the tube body 4 from one end opening of the tube body 4, and the LED substrate 3 is inserted into the tube body 4. Store in. In this stored state, end caps 6 are attached to the left and right opening ends of the tube body 4. In order to achieve this attachment, the annular attachment portion 6B of the end cap 6 is formed with a notch 6D into which the pair of ribs 4B and 4B are inserted.

When attaching the end cap 6 to the left and right opening ends of the tube body 4, first, the board-side connector 1
1A and the terminal side connector 11B are combined, and the end cap 6 is fitted to the left and right opening ends of the tube body 4 in this state. Along with this fitting, the pair of ribs 4B and 4B are inserted into the notches 6D, while the opening end of the tube body 4 is an annular stopper flange 6C of the end cap 6.
The tube body 4 is inserted into the outer surface of the annular mounting portion 6B at the inner end until it comes into contact with the inner surface. By this insertion, the annular attachment portion 6B and the tube body 4 are joined by an adhesive applied to at least one of them, and the annular attachment portion 6B and the tube body 4 are integrated.

When the end caps 6 are attached to the left and right opening ends of the tube body 4, the LED substrate 3 inserted and supported in the pair of support grooves 4 </ b> A in the tube body 4 is placed in a predetermined position in the tube body 4 and positioned. For this purpose, a substrate stopper 6E is formed on the end cap 6 at the center of the notch 6D. Thus, if the LED board 3 is displaced in either the left or right direction of the tube body 4 by attaching the end caps 6 to the left and right opening ends of the tube body 4 as described above,
As shown in FIG. 8, the end portion 3 </ b> B of the LED substrate 3 in the longitudinal direction comes into contact with the substrate stopper portion 6 </ b> E, and the LED substrate 3 is positioned at the left and right central positions of the tube body 4. This positioning is effective so that the light emission of the LED 2 can be obtained uniformly from the entire length of the tube body 4.

In this way, the tube body 4 and the end cap 6 are coupled. In this assembly operation, when the lead wire 7 is pulled, bent, or twisted, the acting force is applied to the lead wire 7 and the terminal. If it is directly applied to a soldered portion with the portion 5, an electrical connection failure such as peeling of the soldered portion or a poor contact state occurs. Further, in the state where the lead wire 7 to which the terminal-side connector 11B is attached is soldered to the terminal portion 5, during the assembly work as described above or during transportation, an action force due to pulling or twisting is applied to the soldered portion. Similarly, there is a risk of poor electrical connection. The present invention provides a technique for preventing such a situation, and a specific configuration thereof will be described below.

As shown in FIGS. 5, 7, 8, and the like, the lead wire 7 is provided on the inner side of the end cap 6 in an inner region surrounded by the annular attachment portion 6 </ b> B as long as it does not protrude from the annular attachment portion 6 </ b> B. A latching portion 15 that is bent and locked in the middle of the lead wire 7 is provided, and by this bending lock, an action force such as pulling or bending of the lead wire 7 applied to a soldered portion between the lead wire 7 and the terminal portion 5 is absorbed. Yes.

The locking portion 15 includes a pair of first locking portions 15A and 15A facing each other, a second locking portion 15B,
15B. The first locking portions 15A and 15A are formed at the end portions of the holes 16A formed in the inner and outer partition walls 16 in the end cap 6, and the second locking portions 15 so as to face the holes 16A.
B and 15B are formed. Therefore, the two lead wires 7 extending from the terminal portion 5 are bent so as to pass through the inner and outer partition walls 16 in the vicinity of the holes 16A and to be locked to the second locking portions 15B and 15B, respectively. It extends to the connector 11B. In this state, as shown in FIG. 8, the two lead wires 7 are locked to the first locking portions 15A and 15A, respectively, and the second locking portion 15B, It will be in the state latched by 15B. First locking portions 15A, 15
The locking of the lead wire 7 to A and the second locking portions 15B, 15B can be achieved by inserting and locking the lead wire 7 while bending it between the second locking portions 15B, 15B.

Locking of the lead wire 7 to the first locking portions 15A and 15A and the second locking portions 15B and 15B is performed by bending the lead wire 7 between the second locking portions 15B and 15B, while the arrow in FIG. This can be achieved by inserting and locking in the direction indicated by Q.

As a result, even if the lead wire 7 is pulled toward the terminal-side connector 11B, the second
Since it is locked to the locking portion 15 </ b> B, this pulling force is absorbed by this portion and is suppressed from being applied to the soldered portion with the terminal portion 5.
Even if the lead wire 7 bends from the terminal-side connector 11B side toward the terminal portion 5, the second
In order to press and lock to the locking portion 15B, this bending action force is absorbed by this portion, and the terminal portion 5
It is suppressed whether or not the soldering portion is hung on. When the lead wire 7 is twisted, the twisting force is absorbed by this portion by one or both of the first locking portions 15A and 15A and the second locking portions 15B and 15B, and the terminal portion. Whether or not the soldering portion 5 is hung on the soldering portion is suppressed.

As shown in FIG. 8, in the state where the lead wire 7 is locked to the first locking portions 15A and 15A and the second locking portions 15B and 15B, the middle of the two lead wires is an S-shaped bend. By being locked in the state, the absorption of the acting force due to the pulling, bending, and twisting of the lead wire 7 can obtain a further favorable effect.

In addition, the absorption of the acting force due to the pulling, bending, and twisting of the lead wire 7 as described above may be performed in a configuration in which the hole 16A formed in the inner and outer partition walls 16 does not exist. However, the presence of the hole 16A further improves the effect. Can be obtained. Even if the partition wall 16 is recessed toward the terminal portion 5 in the portion corresponding to the hole 16A, the middle portion of the two lead wires in the portion of the locking portion 15 is S.
It will be locked in the state which becomes a character-like bending, and the same effect can be acquired.

As described above, the tube body 4 is formed into a cylindrical shape by extrusion molding, and at the position facing the inner surface, the tube body 4 extends in the longitudinal direction of the tube body 4 and the opposed end portion 3A of the LED substrate 3 is inserted and supported. A pair of support grooves 4A is formed, and as shown in FIG. 8, the end cap 6 includes an engagement portion 15 that is bent and engaged in the middle of the lead wire 7, and an LED substrate inserted and supported in the pair of support grooves 4A. 3 longitudinal end 3B
The stopper portion 6E for positioning the LED substrate 3 is formed. The stopper portion 6E is a position in contact with or close to the longitudinal end portion 3B of the LED substrate 3 in the inner region surrounded by the annular mounting portion 6B, and the longitudinal end portion 3 of the LED substrate 3.
LE does not come into contact with the bent portion of the lead wire 7 bent and locked by the locking portion 15.
This is the position that acts to limit the movement of the D substrate 3 in the longitudinal direction. For this reason, since the movement of the LED substrate 3 in the longitudinal direction is limited by the stopper portion 6E, the LED substrate 3 can be moved during transportation and the like, and damage to the covering of the lead wire 7 can be prevented.

The LED lighting device according to the present invention is not limited to the straight tube LED lighting device shown in the above embodiment,
The technology of the present invention can be applied to a sarkline type or other bent shapes, and various types of LED lighting devices are included within the technical scope of the present invention.

1 ... LED lighting device 2 ... LED
3... LED board 3A... Illumination side face 3B... Longitudinal end 3P of the LED board 3 .. Illumination side face 4. ······ Rib 5 ··· Terminal portion 6 ··· End cap 6B ··· Ring attachment portion 6D ··· Notch 6E ··· Stopper portion 7 ··· Lead wire 8... LED drive circuit board 9... AC / DC conversion circuit section 10... Voltage control section 11 A .. Board side connector 11 B. ··· Socket 13 ··· Bypass wire 15 ··· Locking portion 15A ··· First locking portion 15B ··· Second locking portion 16 ··· Partition 16A ··· hole

Claims (3)

An end cap having a terminal portion that is accommodated so that a long LED substrate on which a large number of LEDs are arranged extends in the longitudinal direction of a tubular body that is at least partially transparent, and is fitted to a socket portion. In the LED lighting device in which power is supplied to the LED via lead wires attached to both ends of the tube body and soldered to the terminal portion,
The LED lighting device according to claim 1, wherein the end cap includes a locking portion that bends and locks the middle of the lead wire and absorbs pulling or bending of the lead wire that is applied to the soldering portion by the bending lock. The terminal portion is composed of two pieces to which AC power supplied from the socket portion is applied, and the lead wire is composed of two pieces connected to the two terminal portions, respectively, and the end cap Is made of a synthetic resin integrally formed so that the locking portions face each other so that the middle of the two lead wires is locked in a S-shaped bend. The LED lighting device according to 1. An end cap having a terminal portion that is accommodated so that a long LED substrate on which a large number of LEDs are arranged extends in the longitudinal direction of a tubular body that is at least partially transparent, and is fitted to a socket portion. In the LED lighting device in which power is supplied to the LED via lead wires attached to both ends of the tube body and soldered to the terminal portion,
The tubular body is formed into a cylindrical shape by extrusion molding, and a pair of support grooves are formed at positions facing the inner surface of the tubular body so as to extend in the longitudinal direction of the tubular body and to insert and support the opposed end portions of the LED substrate. ,
In the end cap, a locking portion that is bent and locked in the middle of the lead wire and a longitudinal end portion of the LED substrate that is inserted and supported in the pair of support grooves are bent and locked by the locking portion. And a stopper portion for preventing contact with the bent portion of the lead wire.
ED lighting device.

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