JP2002141555A - Led illumination lamp and method for manufacturing led illumination lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED illumination lamp capable of being safely and simply discarded and treated, reducing power consumption and easily arranging a printed board and a port fitment in a slender tube. SOLUTION: The LED illumination lamp comprises a printed board 3 installed in the slender tube 2, many LED units 4 arranged at a prescribed interval in a longitudinal direction at an upper surface side of the board 3, and a pair of bushings 8 and 9 mounted at both ends of the tubes 2. Thus, light of a relatively high luminance can be emitted at a low current from the LED units 4. The lamp can prevent adhesion of a mercury or the like, like in a conventional fluorescent lamp to the tube 2, and the board 3 is fixed in the tube 2 by the bushings 8 and 9, and mouth fitments 10 and 11 can be held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED lamp having a plurality of LEDs (light emitting diodes), each of which emits light when energized, and a method of manufacturing the LED lamp.

[0002]

2. Description of the Related Art FIG. 23 is an explanatory view showing a general fluorescent lamp.

[0003] A fluorescent lamp 100 shown in FIG. 23 is widely used along with an incandescent lamp (not shown) as a light source of a general illumination lamp, and includes a cylindrical glass tube 101 and both ends of the glass tube 101. A coil-shaped electrode filament 102 provided inside and coated with a thermionic emissive substance, a pair of bases 103 fixed to both ends of a glass tube 101, and two sets each fixed to the outer surface of these bases 103 Electrode pins 104 and 104A. Further, mercury and argon gas are sealed in the glass tube 101, and a fluorescent substance is applied to the inner wall of the glass tube 101.

[0004]

By the way, in the above-mentioned prior art, the fluorescent lamp 100 shown in FIG. 23 has the following problems.

(A) Since mercury or argon gas is sealed in the glass tube 101, when the glass tube 101 is damaged, there is a risk that mercury adheres to the human body or clothes of a person who discards the damaged glass tube 101. There is.

(B) When the fluorescent lamp 100 is replaced with a new one due to the life or the like of the fluorescent lamp 100 and the replaced fluorescent lamp 100 is discarded, when the glass tube 101 is crushed, mercury sealed in the glass tube 101 is diffused to the surroundings. The glass tube 10
In order to prevent mercury from adhering to the operator who crushes the crusher 1, a large-scale crusher is required. Further, since mercury adheres to the glass pieces of the crushed glass tube 101, there is a problem in that when these glass pieces are buried as such as industrial waste in the ground, soil contamination occurs.

(C) Since it is necessary to seal mercury or argon gas in the glass tube 101, it is necessary to mount the glass tube 101 and the base 103 with high accuracy and to maintain sufficient airtightness.

(D) Since a large amount of thermoelectrons is emitted from the electrode filament 102 by applying a high-voltage alternating current to the electrode filament 102, the power consumption is relatively large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances in the prior art, and a first object of the present invention is to enable safe and easy disposal and to reduce power consumption. It is another object of the present invention to provide an LED lamp in which a printed circuit board can be easily held at a predetermined position in an elongated tube and a base can be easily integrated with the elongated tube.

A second object of the present invention is to provide an LED illuminating lamp which can easily perform electrical connection between a printed board and electrode pins.

A third object of the present invention is to prevent the LED body from being heated to a high temperature by the heat generated by the current limiting resistor.
Another object of the present invention is to provide a good looking LED lighting.

A fourth object of the present invention is to provide an LED lamp which can be used in combination with existing various elongated tubes having different diameters and existing various fittings having different diameters. is there.

A fifth object of the present invention is to prevent an elongated tube from being damaged even when the bushing becomes hot during use, and to securely fix the bushing to the elongated tube. Is to provide.

[0014] A sixth object of the present invention is to provide an LED illuminating lamp which can fix the fitting to the bushing with good appearance and securely.

A seventh object of the present invention is to provide an LED capable of suppressing the warpage of a printed circuit board provided in an elongated tube.
An illumination lamp is provided.

An eighth object of the present invention is to provide a method for manufacturing an LED lighting lamp, which can be used for manufacturing an LED lighting lamp in an assembly line.

[0017]

In order to achieve the first object, the invention according to claim 1 of the present invention is directed to an LED illuminating lamp having a plurality of LED bodies each of which emits light when energized. A plurality of LEs made of a rigid material;
D is a printed circuit board disposed on the upper surface side at a predetermined interval along the longitudinal direction, an elongated tube having a light-transmitting and shape-retaining property for storing the printed circuit board, and a lower surface side of the printed circuit board. An electric component including a full-wave rectifier diode and a plurality of current limiting resistors, a pair of bushings attached to both ends of the elongated tube, and made of an insulating material for fixing the printed circuit board in the elongated tube; Comprising a pair of bases mounted on each of the outer peripheries of the bushing, a pair of electrode pins provided on each of the bases, and a connector for electrically connecting the electrode pins to the printed circuit board. It is.

According to the first aspect of the present invention having such a configuration, light of relatively high luminance can be emitted at a low current by the LED body, so that power consumption can be reduced. Also, even if the elongated tube containing the components is damaged,
Since the mercury is not sealed and the mercury does not adhere to the broken elongated tube like a fluorescent lamp, the disposal of the elongated tube can be performed safely and easily. Further, by mounting the bushings at both ends of the elongated tube, the printed circuit board can be easily held at a predetermined position in the elongated tube by these bushings, and a base having electrode pins provided on the elongated tube can be easily integrated.

In order to achieve the second object,
The invention according to claim 2 of the present invention is the lead according to claim 1, wherein the connecting body is soldered at one end to the printed circuit board and the other end is soldered to an electrode pin provided at the base. It consists of lines.

According to the second aspect of the present invention, the both ends of the lead wire are soldered to the printed circuit board and the electrode pins provided on the base, so that the printed circuit board is electrically connected to the electrode pins. Can be easily performed.

According to a third aspect of the present invention, there is provided the invention according to the first or second aspect, wherein the plurality of LED elements are provided on an upper surface side of the printed circuit board. Are arranged almost linearly,
On the lower surface side of the printed circuit board, the electric components are arranged substantially linearly and below the LED bodies.

According to the third aspect of the present invention, a plurality of LEDs are provided on the upper surface of the printed circuit board.
Only the body is arranged in a substantially straight line, and only a plurality of electrical components are arranged in a substantially straight line on the lower surface side of the printed circuit board, and the upper and lower surfaces of the printed circuit board are in a neat form It becomes a good looking LED lighting.
Furthermore, the heat generated from the current limiting resistor is blocked by the printed circuit board and is transmitted to the lower half of the elongated tube and the lower surface side of the printed circuit board. It can be prevented from being heated to a high temperature.

In order to achieve the fourth object, the invention according to claim 4 of the present invention is directed to the invention according to claim 2 or 3, wherein the bushing comprises a ring groove into which the elongated tube fits. A pedestal on which the edge of the printed circuit board is mounted, a through-hole through which the lead wire passes, and a mounting tubular portion into which the fitting is press-fitted.

According to the fourth aspect of the present invention, a plurality of bushings having different diameters of the ring groove into which the elongated tube fits and the diameter of the mounting cylinder into which the fitting fits can be easily formed. By preparing the bushings appropriately, various existing elongated tubes having different diameters and existing various mouthpieces having different diameters can be used in combination.

In order to achieve the fifth object, the invention according to claim 5 of the present invention relates to the invention according to claim 4, wherein the inner peripheral wall diameter of the ring groove of the bushing is smaller than the inner diameter of the elongated tube. By setting it small, a gap serving as a clearance allowance when the inner peripheral wall of the ring groove of the bushing swells outward due to heat is provided between the inner peripheral wall of the ring groove of the bushing and the inner wall of the elongated tube. While forming
The inner wall of the elongated tube is fixed to the inner peripheral wall of the ring groove of the bushing by interposing an adhesive that does not cure with heat in the gap.

In the invention according to the fifth aspect of the present invention, even if the inner peripheral wall of the ring groove bulges outward due to high heat due to the high temperature of the bushing, the inner peripheral wall of the ring groove is elongated. Since the gap between the inner wall of the tube and the inner wall of the tube serves as a clearance, and the adhesive interposed in the above-mentioned space is not cured by heat, the force applied to the inner wall of the elongated tube due to the bulging is reduced. Thereby, even if the bushing becomes hot during use, it is possible to prevent the elongated tube from being damaged, and the bushing can be securely fixed to the elongated tube.

In order to achieve the sixth object, the invention according to claim 6 of the present invention is directed to the invention according to claim 4 or 5, wherein the cross-sectional shape is formed on the outer peripheral wall of the mounting cylindrical portion of the bushing. It has a configuration in which a plurality of hemispherical ribs are formed.

In the invention according to claim 6 of the present invention, when an adhesive is applied to the outer peripheral wall of the mounting cylinder portion of the bushing, a sufficient amount of adhesive is applied to the concave portion between the ribs formed on the outer peripheral wall. The adhesive adheres, and the fitting is pressed into the outer peripheral wall of the mounting cylinder part without bias by the plurality of hemispherical ribs, so that the adhesive flows out from between the fitting and the bushing. Can be kept to a minimum. This allows
The fitting can be fixed to the bushing with good appearance and surely.

In order to achieve the seventh object, the invention according to claim 7 of the present invention relates to the invention according to any one of claims 1 to 6, wherein a predetermined portion of the printed circuit board is provided in the elongated tube. Is provided with a support member for supporting.

In the invention according to the seventh aspect of the present invention, a predetermined portion of the printed circuit board provided in the elongated tube is supported by the supporting member, so that the printed circuit board can be prevented from warping.

In order to achieve the eighth object, the invention according to claim 8 of the present invention is directed to an LE used in manufacturing the LED lighting according to any one of claims 1 to 7.
The method for manufacturing a D illumination lamp, wherein the plurality of LED bodies are:
A component mounting step of mounting the electrical component and the connection body on the printed circuit board, and an insertion step of inserting the printed circuit board into the elongated tube after completion of the component mounting step;
After the insertion step, the bushing is attached to both ends of the elongated tube to fix the printed circuit board in the elongated tube. After the bushing attachment step, the base is attached to the outer periphery of the bushing. And a fitting attaching step for making an electrical connection between the connecting body and the fitting.

The invention according to claim 9 of the present invention provides:
The method for manufacturing an LED lighting device according to claim 1, wherein the plurality of LED members, the electric component, and the connecting member are attached to the printed circuit board. An attaching step, an inserting step of inserting the printed circuit board into the elongated tube after the completion of the component attaching step, and attaching the bushings to both ends of the elongated tube after the inserting step to move the printed circuit board into the elongated tube. A bushing mounting step of fixing the bushing to the outer periphery of the bushing after the completion of the bushing mounting step, and then press-fitting and fixing the base to the outer periphery of the bushing; And a fitting mounting step for making electrical connection.

In the invention according to claim 8 and the invention according to claim 9 of the present invention, the LED lighting lamp can be manufactured smoothly by a series of operations by using the above-described series of steps. .

[0034]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an LED lamp according to the present invention and a method for manufacturing the same.

FIG. 1 shows an LED according to an embodiment of the present invention.
FIG. 2 is a perspective view showing an illuminator, FIG. 2 is a plan view of a printed circuit board provided in the LED illuminator of the present embodiment, FIG. 3 is a plan view of the LED illuminator of the present embodiment, and FIG. FIG. 5 is a side view of the LED lighting device of the present embodiment, FIG. 6 is a plan view showing an enlarged part a of FIG. 3, and FIG. 7 is an enlarged view of a part b of FIG. FIG. 8 is a side view, and FIG.
FIG. 9 is a cross-sectional view taken along line XX of FIG. 3, FIG. 10 is a cross-sectional view taken along line YY of FIG. 3, and FIG. Front view of the LED body, FIG. 12 is a cross-sectional view showing an enlarged end portion of the LED lamp of the present embodiment, FIG. 13 is a side view of a bushing provided in the LED lamp of the present embodiment, viewed from the inside, 14 is a cross-sectional view of the bushing of FIG. 13 along the line ZZ, FIG. 15 is a side view of the bushing provided in the LED lighting of the present embodiment, and FIG. 16 is an LED lighting of the present embodiment. FIG. 17 is an explanatory diagram of an existing lighting device to be used, FIG. 17 is an electric circuit diagram of a printed circuit board provided in the LED lighting device of the present embodiment, and FIG. 18 is a flowchart showing steps in manufacturing the LED lighting device of the present embodiment. . In FIG. 1, LE
The illustration of the wiring on the printed board provided in the D illumination lamp is omitted.

The LED lighting 1 of the present embodiment shown in FIG.
Is a translucent and shape-retaining cylindrical elongated tube 2;
An elongated printed circuit board 3 made of a rigid material installed in the elongated tube 2 and a light emitting source arranged at a predetermined interval on the upper surface 3A of the printed circuit board 3 along the longitudinal direction of the printed circuit board 3 A plurality of LED bodies (i.e., light emitting diodes) 4, an electric component 7 including a full-wave rectifier diode 5 and a plurality of current limiting resistors 6 disposed on the lower surface 3B of the printed circuit board 3; Mounted on both ends,
A pair of bushings 8, 9 made of an insulating material for fixing the printed circuit board 3 in the elongated tube 2, and these bushings 8, 9;
A pair of fittings 10 and 1 attached to each of the outer circumferences of
2, connectors 12 and 13 for electrically connecting the fittings 10 and 11 to the printed circuit board 3 are provided at both ends of the printed circuit board 3 as shown in FIG.

The elongated tube 2 is, for example, a circular tube made of transparent glass having an outer diameter of about 30 mm, an inner diameter of about 27 mm, and a length of about 561 mm, and dust adheres to the printed circuit board 3, the LED body 4 and the electric parts 7. Or to prevent water droplets from adhering.

The printed board 3 has a length of about 559, for example.
It is made of a heat-resistant synthetic resin plate having a size of about 26.6 mm × about 1.5 mm × width. As described above, the width of the printed circuit board 3 is set to about 26.6 mm,
Is about 27 mm and the width of the printed circuit board 3 is slightly smaller than the inner diameter of the elongated tube 2. When the printed circuit board 3 is inserted into the elongated tube 2, the inner wall of the elongated tube 2 serves as a guide wall. Function.

On the upper surface 3A of the printed circuit board 3,
As shown in FIGS. 1, 2, 3 and 5, ten LEDs are arranged at equal intervals along the longitudinal direction of the printed circuit board 3.
The body 4 is arranged in a straight line. The distance between the LED bodies 4 is preferably set such that the distance from the mounting center of the LED bodies 4 to the mounting center of the adjacent LED bodies 4 is about 54 mm. 1, the lower surface 3B of the printed circuit board 3
As shown in FIGS. 4 and 5, ten current limiting resistors 6 are provided at equal intervals along the longitudinal direction of the printed circuit board 3.
Are arranged in a straight line. These current limiting resistors 6
Is 1.6 kΩ, and is disposed so as to be located between the LED bodies 4. One full-wave rectifier diode 5 is disposed at one end of the lower surface 3B of the printed circuit board 3. This full-wave rectifier diode 5 converts a direct current into a direct current when the power is an alternating current. Current is L
It has a function of supplying to the ED body 4 and supplying the DC current to the LED body 4 as it is when the power supply is a DC current.

The plurality of LED bodies 4 all have the same shape and the same size, and have a structure that emits a single green color when lit. As shown in FIG. 11, all the LED bodies 4 include a container-shaped lens 4A made of epoxy resin, a semiconductor chip 4B housed in the lens 4A, and approximately one chip on the semiconductor chip 4B.
It has two pin-shaped metal conductors 4C and 4D for applying a direct current of 0 to 15 mA. The lens 4A has a narrow directional lens structure for directing light from the semiconductor chip 4B in one direction.

The bushings 8, 9 are made of a synthetic resin material having excellent insulation, heat resistance and dimensional stability, for example, a polybutylene terephthalate material. For example, as shown in FIGS. 12 to 15, the bushing 8 includes a ring groove 8 </ b> A into which the elongated tube 2 is press-fitted, a pedestal 8 </ b> B on which the edge of the printed circuit board 3 is mounted, and a through hole through which the connecting body 13 passes. 8C, a cylindrical mounting cylinder 8D into which the fitting 10 is press-fitted, and a receiving ring body 8F provided in the mounting cylinder 8D. In this bushing 8, by setting the diameter of the inner peripheral wall 8A-1 of the ring groove 8A to be smaller than the inner diameter of the elongated tube 2, the inner peripheral wall 8A-1 of the ring groove 8A of the bushing 8 is set.
G1 which becomes a relief when the bulges outward due to heat
Are formed between the inner peripheral wall 8A-1 of the ring groove 8A and the inner wall of the elongated tube 2. The inner wall of the elongated tube 2 is fixed to the inner peripheral wall 8A-1 of the ring groove 8A by interposing an adhesive that is not cured by heat in the gap G1. A silicon-based material having a property of maintaining flexibility even when 2 is bonded to the ring groove 8A is used. A plurality of ribs 8E having a height of about 0.5 mm and a semi-spherical cross section are formed at substantially equal intervals on the outer peripheral wall 8D-1 of the mounting cylinder 8D.

Similarly, the other bushings 9 also have ring grooves 9
A, a base 9B, a through hole 9C, a mounting cylinder 9D, and a receiving ring body 9F, and an inner peripheral wall 9A of the ring groove 9A.
By setting the diameter of -1 smaller than the inner diameter of the elongated tube 2, the gap G1 serving as an escape when the inner peripheral wall 9A-1 of the ring groove 9A bulges outward due to heat is increased. 9A-1 and the inner wall of the elongated tube 2. A plurality of ribs 9E having a height of about 0.5 mm and a semi-spherical cross section are formed at substantially equal intervals on the outer peripheral wall 9D-1 of the mounting cylinder 9D.

Then, the printed circuit board 3 is mounted on the pedestals 8B, 9B of the bushings 8, 9, with the edges of the printed circuit board 3 placed on the pedestals 8B, 9B and the lower edge of the printed circuit board 3 on the lower side. By attaching with an adhesive, it is fixed to the bushings 8 and 9.

The base 10 includes a metal body 10A press-fitted to the outer periphery of the mounting cylinder 8D and an existing lighting device 14 to be described later.
Electrode pin 1 electrically connected to the power supply circuit section 15
0B, and an insulating disk 10C fixed to the opening edge of the metal body 10A and made of an insulating material that supports the electrode pins 10B. The electrode pins 10B are made of a conductive material, for example, brass. When the metal fitting 10 is attached to the bushing 8 when the metal body 10A of the metal fitting 10 is pressed into the mounting cylindrical portion 8D of the bushing 8, the metal body 10A is guided by the rib 8E, and the metal body 10A is not biased. The metal body 10A smoothly fits into the mounting cylinder portion 8D of the bushing 8, and the adhesive flows into the recess formed by the rib 8E of the mounting cylinder portion 8D of the bushing 8 so that the metal body 10A moves outward from the metal body 10A. Adhesive does not flow.
The receiving ring body 8F provided in the mounting cylinder portion 8D has a function of preventing deformation such as movement of the insulating disk 10C. The same applies to the other metal fittings 11, that is, a metal body 11 </ b> A, one electrode pin 11 </ b> B, and an insulating disc 11.
C.

The connecting body 12 is a lead made of a single copper wire whose one end 12A is soldered to the printed circuit board 3 and whose other end 12B is soldered to the electrode pin 10B of the fitting 10 through the through hole 8C of the bushing 8. Consists of lines.
The same applies to the other connection bodies 13, one end 13A of which is soldered to the printed circuit board 3, and the other end 13B of which is a bushing 9
Through a through hole 9C, and is formed of a lead made of a single copper wire and soldered to the electrode pin 11B of the fitting 11.

The existing lighting device 14 shown in FIG.
A first receiving member 16 and a second receiving member 17 for detachably attaching the illuminating lamp 1 to a predetermined place, and the first receiving member 1
6, mounting brackets 19 and 20 for fixing the second receiving member 17 to the mounting member 18, a first wiring cord 22 connecting the power receptacle 21 connected to the power supply circuit section 15 and the first receiving member 16, and And a second wiring cord 23 for connecting the power outlet 21 and the second receiving member 17 to each other. An elastic material such as rubber or silicon having a large frictional resistance is provided between the first receiving member 16 and the base member 10 or between the second receiving member 17 and the base member 11. A donut-shaped rotation preventing member 24 for preventing rotation is provided.

As shown in FIG. 17, five LED elements 4 and 5
A first L in which a plurality of current limiting resistors 6 are alternately connected in series.
An ED series circuit 25 is formed, and the other five LED bodies 4 and 5
The second L in which the current limiting resistors 6 are alternately connected in series
An ED series circuit 26 is formed, and a parallel circuit is formed by connecting these LED series circuits 25 and 26 in parallel, and one full-wave rectifier diode 5 is connected in series to this parallel circuit. It is. The printed wiring between the LED series circuits 25 and 26 and the full-wave rectifier diode 5 is laid on the printed circuit board 3 as shown in FIG.

The following effects can be obtained with the LED lighting 1 of the embodiment configured as described above. That is, (1)
Even if the LED body 4 is turned on when the environmental temperature of the LED lighting 1 is 50 ° C., it can be confirmed by experiments by the present applicant that the temperature inside the elongated tube 2 can be maintained within about 60 ° C. Was.

(2) LED with high brightness at low current
It was confirmed by experiments by the present applicant that the adoption of the body 4 reduced the power consumption of the LED illumination lamp 1 to about 1/4 that of the conventional one.

(3) The life of the LED lamp 1 is prolonged,
Experiments by the present applicant have confirmed that the replacement of the LED lamp 1 can be extended from about 1 year to about 14 years.

(4) Since no mercury or argon gas is sealed in the elongated tube 2, even if the elongated tube 2 is damaged,
It is safe because there is no danger of mercury adhering to the human body or clothes of the person discarding the damaged elongated tube 2.

(5) When replacing the old elongated tube 2 with a new one due to the life of the LED lamp 1, etc.
Even if the elongated tube 2 is crushed, mercury does not diffuse to the surroundings. Therefore, a large-scale crushing device is not required to prevent the mercury from adhering to the operator who crushes the elongated tube 2,
It can be easily performed. Further, since mercury does not adhere to the crushed glass piece of the elongated tube 2, it is not treated as industrial waste and can be easily reused.

(6) Since it is not necessary to seal mercury or argon gas in the elongated tube 2, the forming of the elongated tube 2,
And the bushings 8, 9 and the fittings 10, 11 can be easily attached.

(7) With the full-wave rectifier diode 5, either an AC or DC power supply can be used.

(8) Since the first LED series circuit 25 and the second LED series circuit 26 are connected in parallel, if the LED body 4 of the first LED series circuit 25 is cut off (is damaged) ) Or L of the second LED series circuit 26
Even when the ED body 4 is cut off, the LED bodies 4 on the printed circuit board 3 are alternately turned on and off, so that all the LED bodies 4 on the printed circuit board 3 are not turned off and can be continuously used as the LED illumination lamp 1.

(9) Only the plurality of LED elements 4 are arranged on the upper surface side of the printed circuit board 3 in a substantially linear manner, and only the plurality of electric components 7 are substantially linearly arranged on the lower surface side of the printed circuit board 3. The upper and lower surfaces of the printed circuit board 3 are neatly arranged so that the LED illuminator 1 has a good appearance, and the heat generated from the current limiting resistor 6 is blocked by the printed circuit board 3 so that the elongated tube is formed. 2 to the lower half of the printed circuit board 3 and the LED body 4 is not directly heated by the heat generated from the current limiting resistor. Can be prevented.

(10) Printed circuit board 3 and electrode pins 10
B, 11B, a connection body 1 made of a lead wire
2 and 13 can be performed more easily.

(11) The printed circuit board 3 is held at a predetermined position in the elongated tube 2 by the bushings 8 and 9, and the base tubes 10 and 11 provided with the electrode pins 10B and 11B are integrated with the elongated tube 2. Can do it without difficulty.

(12) Ring groove 8 into which elongated tube 2 fits
A plurality of bushings having different diameters of A, 9A and the diameter of the mounting cylinder portions 8D, 9D to which the fittings 10, 11 are fitted are prepared, and by appropriately changing the bushings, various existing elongated shapes having different diameters are obtained. A pipe and various existing fittings having different diameters can be appropriately combined and used.

(13) Even if the bushings 8 and 9 are in a high temperature state during use of the LED illumination lamp 1 and the inner peripheral walls 8A-1 and 9A-1 of the ring grooves 8A and 9A are thermally expanded outward, the ring grooves are formed. Since there is a gap between the inner peripheral walls 8A-1 and 9A-1 of 8A and 9A and the inner wall of the elongated tube 2 and the adhesive does not harden, the force applied to the inner wall of the elongated tube 2 due to the thermal expansion is reduced. . As a result, the bushings 8, 9 can be securely fixed to the elongated tube 2 without damaging the elongated tube 2.

(14) Mounting tube 8 of bushings 8 and 9
When an adhesive is applied to the outer peripheral walls 8D-1 and 9D-1 of D and 9D, a sufficient amount of the adhesive adheres to the concave portion between the hemispherical ribs 8E and 9E. 8
The base is pressed into the outer peripheral walls 8D-1 and 9D-1 of D and 9D without bias by the plurality of hemispherical ribs 8E and 9E, and the adhesive is applied between the bases 10 and 11 and the bushings 8 and 9. As it can be minimized from flowing out,
The bushings 8, 9 and the bases 10, 11 are fixed securely and with good appearance.

The method for manufacturing the LED lighting 1 of the present embodiment is performed according to a series of steps S1 to S4 shown in FIG. That is, as the component mounting step S1,
After the ten LED members 4, the electric component 7 including one full-wave rectifier diode 5 and the ten current limiting resistors 6, and the connection members 12 and 13 are mounted on the printed circuit board 3, the insertion process S2 is performed. , The printed circuit board 3 is inserted into the elongated tube 2, and as a bushing attaching step S3, the printed circuit board 3 is inserted.
Are fixed to both ends of the elongated tube 2, which are then fixed in the elongated tube 2.
The base 10 is mounted on the outer periphery of the bushing 8, the other base 11 is mounted on the outer circumference of the bushing 9, and the electrode pins 10 </ b> B of the base 10 are electrically connected to the connector 13. The electrical connection between the electrode pin 11 </ b> B and the connection body 12 is performed.

In the above-mentioned fitting attaching step S4, after the bushing attaching step S3 is completed, an adhesive is applied to the outer periphery of the bushings 8, 9, and then the fittings 10, 11 are press-fitted and fixed to the outer periphery of the bushing 8, 9 respectively. At the same time, the electrical connection between the electrode pins 10B, 11B and the connectors 12, 13 may be made. In the bushing attaching step S3, an adhesive may be applied to the bushings 8 and 9 in advance.

According to the manufacturing method of the LED lighting lamp 1 of the present embodiment thus configured, the LED lighting lamp 1 is
Since it is possible to smoothly assemble by flow work according to S2, the productivity of the LED lighting 1 can be improved.

In the LED lighting 1 according to the present embodiment,
The elongated tube 2 is made of transparent glass, but is not limited to this, and may be made of a synthetic resin as long as it allows light to pass therethrough and has shape retention and flame retardancy.

FIG. 19 is an explanatory view showing a modification of the bushing provided in the LED lighting, FIG. 20 is a sectional view showing an example of a supporting material provided in the LED lighting, and FIG. 21 is a supporting material provided in the LED lighting. FIG. 22 is a sectional view showing a modification of FIG.
FIG. 9 is a cross-sectional view showing another modification of the support member provided in the LED lighting.

The bushings 8 and 9 shown in FIG. 19 have printed circuit board holding portions 8H and 9H formed integrally with the bushings 8 and 9, respectively. The other structures are basically the same as those of the bushings 8 and 9. Are identical. In each of the printed circuit board holding portions 8H and 9H, the printed circuit board 3 inserted into the elongated tube 2 was pressed by the pedestals 8B and 9B of the bushings 8 and 9 in the bushing attaching step S3 when manufacturing the LED illumination lamp 1. It has a function to maintain the state. Therefore,
Since the printed board 3 and the pedestals 8B, 9B are not separated from each other by the printed board holding portions 8H, 9H, the printed board 3 and the pedestals 8B, 9B can be securely fixed by the adhesive.

A support member made of an insulating material, for example, a support pin 27 is erected below the elongated tube 2 shown in FIG. 20, and is in contact with the central portion of the lower surface 3B of the printed circuit board 3. By supporting the central portion of the printed circuit board 3 with the support pins 27, the warpage of the printed circuit board 3 inserted into the elongated tube 2 can be suppressed.

A support member made of an insulating material, for example, a support pin 28 is provided upright in the elongated tube 2 shown in FIG. 21 and penetrates the center of the printed circuit board 3. By supporting the central portion of the printed circuit board 3 at 28, the warpage of the printed circuit board 3 inserted into the elongated tube 2 can be suppressed.

A U-shaped support 29 made of an insulating material is attached to both sides of the printed board 3 shown in FIG. 22 in the width direction. By supporting, the warpage of the printed circuit board 3 inserted into the elongated tube 2 can be suppressed.

[0071]

As described above, according to the first aspect of the present invention,
In the LED lighting according to the above, light of relatively high luminance can be emitted at a low current by the LED body, so that power consumption can be reduced. Also, even if the elongated tube containing the components is damaged, mercury is not sealed and the mercury does not adhere to the damaged elongated tube like a fluorescent lamp, so disposal of this elongated tube can be performed safely and easily. You. Further, the printed circuit board can be easily held at a predetermined position in the elongated tube by the bushings attached to both ends of the elongated tube, and a base provided with electrode pins in the elongated tube can be easily integrated.

Further, in the LED lighting according to the second aspect, both ends of the connection body composed of the lead wires are soldered to the printed circuit board and the electrode pins provided on the fitting.
Electrical connection between the printed circuit board and the electrode pins can be easily performed.

Further, in the LED lamp according to the third aspect, only the plurality of LED elements are arranged in a substantially straight line on the upper surface side of the printed circuit board, and the plurality of electric components are arranged on the lower surface side of the printed circuit board. Only the printed circuit boards are arranged in a substantially straight line, and the upper and lower surfaces of the printed circuit board are neatly formed, so that the LED lighting lamp has a good appearance. Furthermore, the heat generated from the current limiting resistor is blocked by the printed circuit board and is transmitted to the lower half of the elongated tube and the lower surface side of the printed circuit board. It can be prevented from being heated to a high temperature.

Further, in the LED lamp according to the fourth aspect, it is possible to easily prepare a plurality of bushings having different diameters of the ring groove into which the elongated tube fits and the diameter of the mounting cylindrical portion into which the fitting fits. By appropriately changing the bushing, various existing elongated tubes having different diameters and existing various metal fittings having different diameters can be used in combination.

Further, in the LED lamp according to the fifth aspect, even if the bushing is in a high temperature state and the inner peripheral wall of the ring groove bulges outward due to high heat, the inner peripheral wall of the ring groove and the inner wall of the elongated tube are not in contact with each other. The clearance between them serves as a clearance, and since the adhesive interposed in the clearance is not cured by heat, the force applied to the inner wall of the elongated tube due to the swelling is reduced.
Therefore, even if the bushing becomes hot during use, it is possible to prevent the elongated tube from being damaged, and the bushing can be securely fixed to the elongated tube.

Further, in the LED lamp according to the sixth aspect, when an adhesive is applied to the outer peripheral wall of the mounting cylinder portion of the bushing, a sufficient amount of the adhesive adheres to the concave portion between the ribs formed on the outer peripheral wall. In addition, the plurality of hemispherical ribs press the fitting into the outer peripheral wall of the mounting cylinder without bias, minimizing the above-mentioned adhesive from flowing out from between the fitting and the bushing. Can be Therefore, the fitting can be fixed to the bushing with good appearance and surely.

Further, in the LED lamp according to the sixth aspect, the printed board can be prevented from warping by supporting a predetermined portion of the printed board provided in the elongated tube with the support material.

Further, L according to claim 7 and claim 8
In the manufacturing method of the ED lighting, the LED lighting can be smoothly manufactured in a flow operation by using a series of parts mounting step, insertion step, bushing mounting step and base fitting mounting step. There is an effect that the productivity at the time of manufacturing can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an LED lamp according to an embodiment of the present invention.

FIG. 2 is a plan view of a printed circuit board provided in the LED lighting according to the embodiment.

FIG. 3 is a plan view of the LED lighting of the embodiment.

FIG. 4 is a view of the LED lighting of the embodiment as viewed from below.

FIG. 5 is a side view of the LED lighting according to the embodiment.

FIG. 6 is an enlarged plan view showing a part a of FIG. 3;

FIG. 7 is an enlarged side view showing a portion b in FIG. 5;

FIG. 8 is an enlarged view showing a portion c in FIG. 4;

FIG. 9 is a sectional view taken along line XX of FIG. 3;

FIG. 10 is a sectional view taken along the line YY in FIG. 3;

FIG. 11 shows an LE provided in the LED lighting of the embodiment.
It is a front view of D body.

FIG. 12 is an enlarged cross-sectional view illustrating an end portion of the LED illumination light according to the present embodiment.

FIG. 13 is a side view of a bushing provided in the LED lighting of the embodiment as viewed from the inside.

14 is a cross-sectional view of the bushing of FIG. 13 taken along the line ZZ.

FIG. 15 is a side view of a bushing provided in the LED lighting according to the embodiment as viewed from the outside.

FIG. 16 is an explanatory diagram of an existing lighting device using the LED lighting lamp of the present embodiment.

FIG. 17 is an electric circuit diagram of a printed circuit board provided in the LED lighting of the embodiment.

FIG. 18 is a flowchart showing steps in manufacturing the LED lighting of the embodiment.

FIG. 19 is an explanatory diagram showing a modified example of the bushing provided in the LED lighting.

FIG. 20 is a cross-sectional view illustrating an example of a support member provided in the LED lighting.

FIG. 21 is a cross-sectional view showing a modification of the support member provided in the LED lighting.

FIG. 22 is a cross-sectional view showing another modification of the support member provided in the LED lighting.

FIG. 23 is an explanatory view showing a general fluorescent lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LED lighting 2 Slender tube 3 Printed circuit board 4 LED body (light emission source) 5 Full-wave rectifier diode 6 Current limiting resistor 7 Electric component 8, 9 Bushing 8H, 9H Printed circuit board holding part 10, 11 Base 10B, 11B Electrode pin 12, 13 connector 14 existing lighting device 15 power supply circuit unit 24 rotation prevention member 25 first LED series circuit 26 second LED series circuit 27 support pin (support material) 28 support pin (support material) 29 support material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Koizumi 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside the Hitachi Building System Co., Ltd. (72) Hiroaki Matsubara 1-333-8 Higashiikebukuro, Toshima-ku, Tokyo Luna Inside Light Corporation (72) Inventor Seiichi Sato 1-33-8 Higashiikebukuro, Toshima-ku, Tokyo Luna Light Corporation F-term (reference) 5F041 AA24 AA31 AA47 DA20 DC23 DC81 DC91 FF11

Claims (10)

[Claims] 1. A plurality of light emitting diodes each emitting light when energized.
An LED lighting device provided with an ED body, comprising: a printed board made of an elongated rigid material, wherein the plurality of LEDs are disposed on the upper surface at predetermined intervals along a longitudinal direction; An elongated tube having a light-transmitting and shape-retaining property, an electric component including a full-wave rectifier diode and a plurality of current limiting resistors provided on the lower surface side of the printed circuit board, and attached to both ends of the elongated tube. A pair of bushings made of an insulating material for fixing the printed circuit board in the elongated tube, a pair of metal fittings mounted on each of the outer peripheries of these bushings, and a pair of electrode pins provided on these metal fittings, An LED illuminator comprising: a connecting body for electrically connecting the electrode pins to the printed circuit board. 2. The connecting body according to claim 1, wherein one end of the connecting body is formed of a lead wire which is soldered to the printed circuit board and the other end of which is soldered to an electrode pin provided on the base. LED lighting as described. 3. A plurality of LED units are disposed substantially linearly on an upper surface of the printed circuit board, and the electric components are disposed substantially linearly on a lower surface of the printed circuit board. The LED lamp according to claim 1, wherein the LED lamp is disposed below the space between the LED lamps. 4. The bushing press-fits a ring groove into which the elongated tube fits, a pedestal on which an edge of the printed circuit board is mounted, a through hole through which the lead wire passes, and the base fitting. The LED illumination lamp according to claim 2, further comprising a mounting cylinder portion. 5. An inner peripheral wall of the ring groove of the bushing is set to be smaller than an inner diameter of the elongated tube, so that the inner peripheral wall of the ring groove of the bushing serves as a clearance when it bulges outward due to heat. A gap is formed between the inner peripheral wall of the ring groove of the bushing and the inner wall of the elongated tube, and an adhesive that is not cured by heat is interposed in the gap to form a gap in the ring groove of the bushing. The inner wall of the elongated tube is fixed to a peripheral wall.
The LED lighting lamp according to 1. 6. An outer peripheral wall of a mounting cylindrical portion of the bushing,
The LED lighting lamp according to claim 4, wherein a plurality of hemispherical ribs are formed in a cross-sectional shape. 7. The LED lamp according to claim 1, wherein a support member for supporting a predetermined portion of the printed circuit board is provided in the elongated tube. 8. An LED according to claim 1,
In a method for manufacturing an LED lamp used when manufacturing a lamp, a component mounting step of mounting the plurality of LED bodies, the electrical components and the connecting body on the printed circuit board, and after the component mounting step, An insertion step of inserting a printed circuit board into the elongated tube, a bushing attachment step of fixing the printed circuit board in the elongated tube by attaching the bushing to both ends of the elongated tube after the insertion step, and a bushing attachment step A step of attaching the base to the outer periphery of the bushing after completion of the step, and a base mounting step of making an electrical connection between the connector and the base. 9. An LED according to claim 1,
In a method for manufacturing an LED lamp used when manufacturing a lamp, a component mounting step of mounting the plurality of LED bodies, the electrical components and the connecting body on the printed circuit board, and after the component mounting step, An insertion step of inserting a printed circuit board into the elongated tube; a bushing attachment step of fixing the printed circuit board in the elongated tube by attaching the bushings to both ends of the elongated tube after the insertion step; After the end of the step, an adhesive is applied to the outer periphery of the bushing, and then, the fitting is press-fitted and fixed to the outer periphery of the bushing, and a fitting mounting step for making an electrical connection between the connection body and the fitting is performed. A method for manufacturing an LED lighting lamp, comprising: 10. The method according to claim 8, wherein an adhesive is previously applied to the bushing side in the bushing attaching step.