JP5356861B2 - Illumination device and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative illumination device with a plurality of LED elements connected by a power line, wherein waterproofness can be maintained even if the power line is bent and pulled in various directions. <P>SOLUTION: The decorative illumination device includes: a power line 3 formed of lead wires 8 covered by an insulation material 9; and an LED element 2 composed of a light-emitting part 10 and an electrode terminal 11 protruded from the light-emitting part 10. The lead wire 8 exposed from the insulation material 9 at an end part of the power line 3 is connected with the electrode terminal 11 and then the plurality of the LED elements 2 are connected by the power line 3. The end part of the insulation material 9 up to the light-emitting part 10 is integrally covered by a resin material 13 which can be melted at a prescribed temperature or higher, and the resin material 13 has elasticity at the melting temperature or lower. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an electrical decoration device that decorates buildings, plants, and the like using LED elements and a method for manufacturing the same.

  2. Description of the Related Art Conventionally, there is an electrical decoration device that decorates buildings, plants, and the like by connecting a plurality of LED elements with a power line (see, for example, Patent Documents 1 to 3). When such an illumination device is used outdoors, since the illumination device is exposed to wind and rain, it is necessary to improve the waterproofness of the illumination device. For example, in Patent Document 2, a spherical structure with a sealed structure is required. A light emitting diode (LED element) and a substrate are arranged in the plastic container, and a power supply line (power line) connected to the substrate is led out of the plastic container.

Japanese Patent Laid-Open No. 6-304059 (page 3, FIG. 2) Japanese Patent Laid-Open No. 2002-8407 (2nd page, FIG. 1) JP 2008-301796 A (page 4, FIG. 1)

  However, in the electrical decoration device described in Patent Documents 1 to 3, the power line is bent in various directions in order to decorate the power line in which a plurality of LED elements are arranged so as to lie on the outer surface of a building or a plant. There is a risk that a gap for moisture to enter between the waterproofing member such as a plastic container and the power line may be generated due to the bending direction or tensile force of the power line.

  The present invention has been made paying attention to such a problem, and in an electrical decoration device in which a plurality of LED elements are connected by a power line, even if the power line is bent and pulled in various directions, it is waterproof. An object of the present invention is to provide an electrical decoration device that can be maintained and a method for manufacturing the same.

In order to solve the above-mentioned problem, the electrical decoration device of the present invention is
A power line formed by covering a conductive wire with an insulating material; and a light emitting unit and an LED element configured by an electrode terminal protruding from the light emitting unit, and is exposed from the insulating material at an end of the power line. In addition, by connecting the conductive wire to the electrode terminal, a plurality of the LED elements are connected by the power line,
A resin material which is melted at a predetermined melting temperature or higher and has a softness at the melting temperature or lower ;
A cylindrical body covering the periphery of the resin material;
With
The resin material covers at least the conductive wire and the electrode terminal,
The cylindrical body is formed of a material that starts thermal contraction at a temperature higher than the melting temperature of the resin material .
According to this feature , the electrode terminal and the conductive wire are covered by melting the resin material, so that moisture does not enter between the closely contacted member and the resin material, and the resin material is solidified at a predetermined melting temperature or less. and, in that state, liable resin material is deformed to the bending direction, also pulled power lines is bent in different directions, eliminates the risk of moisture entering the coated parts position in the resin material, illuminations The waterproofness of the device can be maintained.
Further, according to this feature, the resin material can be melted and the cylindrical body can be attached by a heating operation during the manufacture of the lighting device, and the thermal contraction of the cylindrical body is started when the resin material is melted. Therefore, the shape of the resin material is determined in accordance with the shape of the inner surface of the cylindrical body that is thermally contracted, and the resin material can be filled between the conducting wire and the electrode terminal and the cylindrical body without any gap. .

The electrical decoration device of the present invention is
An adhesive which is melted at a temperature higher than the melting temperature of the resin material is applied to the inner surface of the cylindrical body .
According to this feature , the resin material can be melted and the cylindrical body can be attached by an adhesive during the manufacture of the electrical decoration device, and the lead wires and electrode terminals connected to each other, the resin material, and the cylinder can be connected. Adhesion increases with the body.

The electrical decoration device of the present invention is
The resin material has a predetermined shape having a groove portion on the outer periphery before melting, and is melted when the conductive wire and the electrode terminal are arranged in the groove portion of the predetermined shape, from the end portion of the insulating material. It is characterized by integrally covering up to the light emitting part .
According to this feature , the light emitting portion, the electrode terminal, the conductive wire, and the insulating material are brought into close contact with each other by melting the resin material, so that moisture does not enter between the closely attached member and the resin material. Since the resin material is easily deformed in the bending direction in that state, even if the power line is bent and pulled in various directions, light is emitted from the end of the insulating material covered with the resin material. There is no risk of moisture entering the part up to the part, and the waterproofness of the electrical decoration device can be maintained.

The electrical decoration device of the present invention is
A plurality of the conducting wires and the electrode terminals are provided, and the conducting wires are connected to the electrode terminals,
The resin material has a plurality of the groove portions before melting, and the resin material is sandwiched between the conductor wires and the electrode terminals when the conductor wires and the electrode terminals are respectively disposed in the groove portions. It is characterized by being.
According to this feature, before melting, the electrode terminal and the conductor are disposed so as to be covered by the groove portion of the resin material, and when the resin material is melted in a state of covering the electrode terminal and the conductor, the molten resin material is It becomes easy to cover the outer periphery of the electrode terminal.

The electrical decoration device of the present invention is
The width between the bottom surfaces of the plurality of groove portions is larger than the separation width of the plurality of electrode terminals .
According to this feature, before melting, the resin material is held in a state of being sandwiched between the plurality of electrode terminals and the conductive wires, and the resin material is prevented from dropping during work.

The manufacturing method of the electrical decoration device of the present invention is:
A power line formed by covering a conductive wire with an insulating material; and a light emitting unit and an LED element configured by an electrode terminal protruding from the light emitting unit, and is exposed from the insulating material at an end of the power line. In addition, the conductive wire is connected to the electrode terminal, whereby a plurality of the LED elements are connected to each other by the power line,
The conductive wire is connected to the electrode terminal, and after the connection, a resin material that is melted at a predetermined melting temperature or higher is disposed in proximity to the conductive wire and the electrode terminal, and the conductive wire, the electrode terminal, and the resin material Is covered with a cylindrical body made of a material that starts thermal contraction at a temperature higher than the melting temperature, the cylindrical body and the resin material are heated, and the resin material is melted at the melting temperature. And at least covering the conductive wire and the electrode terminal with the resin material , heating the cylindrical body to a temperature higher than the melting temperature of the resin material, and then solidifying below the melting temperature. It is characterized in that the resin material has flexibility.
According to this feature , the electrode terminal, the conductor, and the insulating material are coated by melting the resin material, so that moisture does not enter between the closely contacted member and the resin material, and the resin material has a predetermined melting temperature. Since the resin material is easily deformed in the bending direction in that state, even if the power line is bent and pulled in various directions, the end from the insulating material covered with the resin material to the light emitting portion There is no risk of moisture entering the site, and the waterproofness of the electrical decoration device can be maintained.
Further, according to this feature, the resin material can be melted and the cylindrical body can be attached by a heating operation during the manufacture of the lighting device, and the thermal contraction of the cylindrical body is started when the resin material is melted. Therefore, the shape of the resin material is determined in accordance with the shape of the inner surface of the cylindrical body that is thermally contracted, and the resin material can be filled between the conducting wire and the electrode terminal and the cylindrical body without any gap. .

The manufacturing method of the electrical decoration device of the present invention is:
The inner surface of the cylindrical body is coated with an adhesive that is melted at a temperature higher than the melting temperature of the resin material, and the cylindrical body is heated at a temperature higher than the melting temperature of the resin material. The adhesive is melted .
According to this feature , the resin material can be melted and the cylindrical body can be attached by an adhesive during the manufacture of the electrical decoration device, and the lead wires and electrode terminals connected to each other, the resin material, and the cylinder can be connected. Adhesion increases with the body.

The manufacturing method of the electrical decoration device of the present invention is:
The resin material has a predetermined shape having a groove portion on the outer periphery before melting , the conductive wire and the electrode terminal are arranged in the groove portion of the predetermined shape, and the conductor wire, the electrode terminal, and the periphery of the resin material, Is covered with the cylindrical body, and the heating of the cylindrical body and the resin material is performed .
According to this feature , the light emitting portion, the electrode terminal, the conductive wire, and the insulating material are brought into close contact with each other by melting the resin material, so that moisture does not enter between the closely attached member and the resin material. Since the resin material is easily deformed in the bending direction in that state, even if the power line is bent and pulled in various directions, light is emitted from the end of the insulating material covered with the resin material. There is no risk of moisture entering the part up to the part, and the waterproofness of the electrical decoration device can be maintained .
Further, according to this feature, before melting, the resin terminal is disposed so that the electrode terminal and the conductive wire are covered with the groove portion of the resin material, and when the resin material is melted in a state of covering the electrode terminal and the conductive wire, the molten resin material is It becomes easy to cover the outer periphery of a conducting wire and an electrode terminal.

The manufacturing method of the electrical decoration device of the present invention is:
A plurality of the conducting wires and the electrode terminals are provided, and the conducting wires are connected to the electrode terminals,
The resin material has a plurality of the groove portions before melting, and the resin material is sandwiched between the conductor wires and the electrode terminals when the conductor wires and the electrode terminals are respectively disposed in the groove portions. It is characterized by being.
According to this feature, before melting, the electrode terminal and the conductor are disposed so as to be covered by the groove portion of the resin material, and when the resin material is melted in a state of covering the electrode terminal and the conductor, the molten resin material is It becomes easy to cover the outer periphery of the electrode terminal.

The manufacturing method of the electrical decoration device of the present invention is:
The width between the bottom surfaces of the plurality of groove portions is larger than the separation width of the plurality of electrode terminals .
According to this feature, before melting, the resin material is held in a state of being sandwiched between the plurality of electrode terminals and the conductive wires, and the resin material is prevented from dropping during work.

The manufacturing method of the electrical decoration device of the present invention is:
The melting temperature is in a temperature range of 45 to 90 ° C.
According to this feature, it is possible to prevent the LED element from being broken during manufacture, or the resin material from being melted by the outside air temperature when used outdoors.

It is a perspective view which shows the electrical decoration apparatus in an Example. It is a perspective view which shows the state which inserts a resin material between electric power lines. It is a perspective view which shows the state which covers the circumference | surroundings of a power line with a cylindrical body. (A) is sectional drawing which shows the resin material and cylindrical body before a heating, (b) is sectional drawing which shows the resin material and cylindrical body after a heating. It is a perspective view which shows the LED element of an electrical decoration apparatus.

  EMBODIMENT OF THE INVENTION The form for implementing the electrical decoration apparatus which concerns on this invention is demonstrated below based on an Example.

  An electrical decoration device according to an embodiment will be described with reference to FIGS. 1 to 5. The code | symbol 1 of FIG. 1 is the electrical decoration apparatus with which this invention was applied. The electrical decoration device 1 is configured by connecting a plurality of LED elements 2 with a power line 3, and is arranged so as to be placed mainly on the outer surface of a building or a plant, and the LED elements 2 are turned on, This is an illumination device for performing decoration by light emission from the element 2.

  As shown in FIG. 1, the electrical decoration device 1 is provided with an insertion plug 4 to be inserted into an outlet or the like at one end portion thereof. The power line 3 extending from the plug 4 is provided with a rectifier 5. A plurality of LED elements 2 are arranged at equal intervals on the power line 3 extending from the rectifier 5.

  A connecting plug 6 is provided at the other end of the electrical decoration device 1. The plugs 4 of other electrical decoration devices 1 are inserted into the connection plug 6, and a plurality of electrical decoration devices 1 can be connected by the connection plugs 6. The connecting plug 6 is provided with a lid 7. When the plug 4 of another electrical decoration device 1 is not inserted, the connecting plug 6 is closed by the lid 7, and the inside of the connecting plug 6 is Rainwater etc. are not allowed to enter.

  Next, a method of connecting the power line 3 to the LED element 2 when manufacturing the electrical decoration device 1 will be described in detail. As shown in FIG. 2, the power line 3 is formed by covering a conductive wire 8 with an insulating material 9, and the conductive wire 8 is exposed from the insulating material 9 at the end of the power line 3. The LED element 2 includes a light emitting unit 10 that serves as a light source by enclosing a semiconductor element in a hard synthetic resin, and two electrode terminals 11 that protrude from the light emitting unit 10.

  First, the conductor 8 of the power line 3 is connected to the two electrode terminals 11 of the LED element 2 by solder 12 respectively. A resin material 13 is disposed between the two electrode terminals 11 and the conductive wire 8. The resin material 13 has a substantially cylindrical shape made of a soft synthetic resin, and two grooves 14 are formed on the outer peripheral surface along the longitudinal direction of the resin material 13.

  In this embodiment, the resin material 13 is formed of a material such as paraffin which is a thermoplastic resin. The resin material 13 is melted in a temperature range of 45 to 90 ° C., and the melting temperature of the resin material 13 in this embodiment is 60 ° C. The material for forming the resin material 13 may be any material as long as it is a thermoplastic resin that is melted in the temperature range of 45 to 90 ° C. Moreover, the resin material 13 is made of a soft material when solidified at a melting temperature or lower.

  The two power lines 3 are divided into two branches from the LED element 2, and a resin material 13 is inserted between the power lines 3 and the resin material 13 is disposed between the two electrode terminals 11 and the conductor 8. At this time, the electrode terminal 11 and the conducting wire 8 are respectively arranged in the groove portion 14 of the resin material 13. The width between the back surfaces of the two groove portions 14 is slightly larger than the separation width of the two electrode terminals 11, and the resin material 13 is sandwiched between the two electrode terminals 11. In this state, the resin material 13 during operation is prevented from falling off.

  As shown in FIG. 3, a cylindrical body 15 is covered so as to cover the periphery of the conducting wire 8 and the electrode terminal 11 connected to each other. The cylindrical body 15 is formed of a material that starts thermal contraction at a predetermined temperature or higher. In this embodiment, the cylindrical body 15 is formed using a cross-linked soft flame retardant polyolefin resin, and when it is heated to a temperature of 65 ° C. or higher, thermal contraction starts, and its diameter is shrunk by about 50%. It has become.

  When the cylindrical body 15 is arranged around the conducting wire 8 and the electrode terminal 11, the cylindrical body 15 is arranged so that the end portion (tip side) of the cylindrical body 15 covers the end portion (base side) of the light emitting unit 10 of the LED element 2. And it covers so that it may cover from the edge part of the light emission part 10 to the edge part of the insulating material 9. FIG. Although a part of the light emitting unit 10 is hidden behind the cylindrical body 15, the tip side of the light emitting unit 10 from which light is emitted remains exposed.

  Note that an adhesive 16 that is melted at a predetermined temperature or higher is applied to the inner surface of the cylindrical body 15 (see FIG. 4A). In this embodiment, when the adhesive 16 is heated to a temperature of 65 [deg.] C. or higher, it is melted and exhibits adhesive ability.

  Fig.4 (a) has shown the resin material 13 before a heating, and respond | corresponds to the AA end surface in FIG. FIG. 4B shows the resin material 13 after heating. As shown in FIG. 4A, the power line 3 is arranged in the groove 14 of the resin material 13 before heating, and almost half of the power line 3 is covered with the resin material 13.

  And warm air is applied in the state which covered the circumference | surroundings of the conducting wire 8 and the electrode terminal 11 with the cylindrical body 15, and the cylindrical body 15 and the resin material 13 are heated with this warm air. The temperature of the cylindrical body 15 and the resin material 13 is increased by heating with warm air, and the resin material 13 is melted when the melting temperature reaches 60 ° C.

  Since the resin material 13 is held in a state of being sandwiched between the two electrode terminals 11, the molten resin material 13 is deformed by the clamping force of the electrode terminal 11, so that the periphery of the conductor 8 and the electrode terminal 11 is It comes to cover. After the resin material 13 is melted, heating with warm air is continued. And as shown in FIG.4 (b), while the cylindrical body 15 becomes 65 degreeC, it heat-shrinks, and when the adhesive agent 16 also becomes 65 degreeC, it fuse | melts and exhibits the adhesive capability.

  As shown in FIG. 5, the heat-shrinked cylindrical body 15 has an inner surface in the vicinity of the distal end thereof bonded to an outer surface in the vicinity of the proximal end portion of the light emitting unit 10 by the adhesive 16. Therefore, the cylindrical body 15 is prevented from shifting, and the cylindrical body 15 and the light emitting unit 10 are integrated.

  Thereafter, when the heating using the warm air is stopped, the molten resin material 13 is cooled to a temperature equal to or lower than the melting temperature, and is solidified in a state where the resin material 13 is filled in the cylindrical body 15. The solidified resin material 13 closes the opening on the proximal end side of the cylindrical body 15, and the conductive wires 8 and the electrode terminals 11 arranged inside the cylindrical body 15 are sealed with the resin material 13.

  As described above, the melting temperature of the resin material 13 of this embodiment may be in the temperature range of 45 to 90 ° C. If the resin material 13 is formed of a material that is melted at a temperature higher than 90 ° C., the LED element 2 in the vicinity of the resin material 13 may fail due to high heat when heated at the time of manufacture, and the temperature is lower than 45 ° C. If the resin material 13 is formed of a material that is melted at a temperature of 45 ° C. to 90 ° C., the resin material 13 may be melted when the outside temperature is high when the decorating device 1 is used outdoors. A material melted in the temperature range is most suitable for forming the resin material 13.

  As described above, in the electrical decoration device 1 of the present invention, the conductive wire 8 is connected to the electrode terminal 11, and after the connection, the resin material 13 melted at a predetermined melting temperature or higher is connected to the conductive wire and the electrode terminal 11. The resin material 13 is heated to a melting temperature or higher to be melted, and the resin material 13 is integrally covered from the end of the insulating material 9 to the light emitting portion 10, and then melted after the coating. Since the resin material 13 solidified below the temperature is soft, the light emitting portion 10, the electrode terminal 11, the conductive wire 8, and the insulating material 9 are brought into close contact with each other by melting of the resin material 13. Moisture does not enter between the resin material 13 and the resin material 13 is solidified below a predetermined melting temperature. In this state, the resin material 13 is easily deformed in the bending direction, so that the power line 3 is bent in various directions. Of the insulating material 9 covered with the resin material 13 even if pulled. The site of the part to the light-emitting portion 10 eliminates the possibility of moisture entering, you are possible to maintain the waterproof illumination device 1.

  The LED element 2 has a plurality of electrode terminals 11, and the conductive wires 8 are connected to the respective electrode terminals 11. The resin material 13 has a plurality of electrode terminals 11 and a conductive wire 8 before melting. Since the resin material 13 is heated and melted during the manufacture of the electrical decoration device 1, the resin material 13 can be filled between the plurality of electrode terminals 11 and the power line 3. In addition, the resin material 13 can prevent a plurality of electrode terminals 11 from being short-circuited, and the resin material 13 can function as the insulating material 9.

  In addition, a groove portion 14 is formed in the longitudinal direction of the resin material 13 before melting, and the resin material 13 is connected to a plurality of electrode terminals so that the conductor 8 and the electrode terminal 11 are disposed in the groove portion 14. 11 and the conductor 8, and the resin material 13 is heated in this state so that the electrode terminal 11 and the conductor 8 are covered with the groove 14 of the resin material 13 before melting. When the resin material 13 is melted in a state of covering the conductor 8, the melted resin material 13 can easily cover the outer periphery of the conductor 8 and the electrode terminal 11.

  Before the resin material 13 is melted, the conductor 8 and the electrode terminal 11 connected to each other are covered with a cylindrical body 15 formed of a material that starts thermal contraction at a melting temperature or higher, and then the cylindrical body 15 Is heated to the melting temperature or higher to cause heat shrinkage, so that the resin material 13 can be melted and the cylindrical body 15 can be attached by heating in the manufacture of the electrical decoration device 1, and the resin material 13 can be melted. Since the thermal contraction of the cylindrical body 15 is sometimes started, the shape of the resin material 13 is determined in accordance with the shape of the inner surface of the cylindrical body 15 to be thermally contracted, and the conductor 8 and the electrode terminal 11 and the cylindrical body are determined. 15, the resin material 13 can be filled without any gap.

  Further, an adhesive 16 that is melted at the melting temperature or higher is applied to the inner surface of the cylindrical body 15, and when the cylindrical body 15 is heated to the melting temperature or higher, the adhesive 16 is melted, At the time of manufacturing the decoration device 1, the melting of the resin material 13 and the attachment of the cylindrical body 15 with the adhesive 16 can be performed by a heating operation, and the conductor 8 and the electrode terminal 11, the resin material 13 and the cylinder connected to each other. The degree of adhesion with the body 15 is increased by the adhesive 16.

  Further, the end of the cylindrical body 15 covers the end of the light emitting unit 10 before the resin material 13 is melted, and the end of the cylindrical body 15 and the end of the light emitting unit 10 are bonded by the adhesive 16 after heat shrinkage. As a result, the cylindrical body 15 and the light emitting unit 10 are integrally brought into close contact with each other, and the sealing degree between the distal end side of the cylindrical body 15 and the light emitting unit 10 is increased by the adhesive 16.

  In addition, the melting temperature is in the range of 45 to 90 ° C., so that the LED element can be prevented from being broken during manufacture or the resin material 13 can be melted due to the outside temperature when used outdoors. it can.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, a material such as paraffin which is a thermoplastic resin is used for the resin material 13, but the material forming the resin material 13 is a thermoplastic which is melted in a temperature range of 45 to 90 ° C. Any material may be used as long as it is a resin, such as polyamide, polyethylene, or polypropylene.

  Moreover, in the said Example, although the two groove parts 14 by which the two electrode terminals 11 which the LED element 2 has are arrange | positioned are formed in the resin material 13 before melting, the LED element 2 has three electrodes. When the terminal 11 is provided, three groove portions 14 may be formed in the resin material 13 and the electrode terminal 11 may be disposed in each groove portion 14.

  Moreover, although the said Example has illustrated the connection part of the LED element 2 and the power line 3 in the electrical decoration apparatus 1 comprised by connecting the some LED element 2 with the power line 3, the similar LED element 2 and a power line are taken as an example. If the connection part with 3 exists, the connection structure of the LED element 2 and power line 3 of a present Example can also be applied not only to the electrical decoration apparatus 1 but to another illuminating device.

DESCRIPTION OF SYMBOLS 1 Electric decoration apparatus 2 LED element 3 Power line 4 Plug plug 5 Rectifier 6 Connection plug 7 Cover body 8 Conductor 9 Insulation material 10 Light emission part 11 Electrode terminal 12 Solder 13 Resin material 14 Groove part 15 Cylindrical body 16 Adhesive

Claims (10)

A power line formed by covering a conductive wire with an insulating material; and a light emitting unit and an LED element configured by an electrode terminal protruding from the light emitting unit, and is exposed from the insulating material at an end of the power line. In addition, by connecting the conductive wire to the electrode terminal, a plurality of the LED elements are connected by the power line,
A resin material which is melted at a predetermined melting temperature or higher and has a softness at the melting temperature or lower ;
A cylindrical body covering the periphery of the resin material;
With
The resin material covers at least the conductive wire and the electrode terminal,
The said cylindrical body is formed with the material from which heat contraction is started at the temperature higher than the said melting temperature of the said resin material, The electrical decoration apparatus characterized by the above-mentioned. The electrical decoration device according to claim 1, wherein an adhesive that is melted at a temperature higher than the melting temperature of the resin material is applied to an inner surface of the cylindrical body. The resin material has a predetermined shape having a groove portion on the outer periphery before melting, and is melted when the conductive wire and the electrode terminal are arranged in the groove portion of the predetermined shape, from the end portion of the insulating material. The electric decoration device according to claim 1 or 2, wherein the light emitting unit is integrally covered . A plurality of the conducting wires and the electrode terminals are provided, and the conducting wires are connected to the electrode terminals,
The resin material has a plurality of the groove portions before melting, and the resin material is sandwiched between the conductor wires and the electrode terminals when the conductor wires and the electrode terminals are respectively disposed in the groove portions. The electrical decoration device according to claim 3, wherein: 5. The electrical decoration device according to claim 4, wherein a width between the bottom surfaces of the plurality of groove portions is larger than a separation width of each of the plurality of electrode terminals . A power line formed by covering a conductive wire with an insulating material; and a light emitting unit and an LED element configured by an electrode terminal protruding from the light emitting unit, and is exposed from the insulating material at an end of the power line. In addition, the conductive wire is connected to the electrode terminal, whereby a plurality of the LED elements are connected to each other by the power line,
The conductive wire is connected to the electrode terminal, and after the connection, a resin material that is melted at a predetermined melting temperature or higher is disposed in proximity to the conductive wire and the electrode terminal, and the conductive wire, the electrode terminal, and the resin material Is covered with a cylindrical body made of a material that starts thermal contraction at a temperature higher than the melting temperature, the cylindrical body and the resin material are heated, and the resin material is melted at the melting temperature. And at least covering the conductive wire and the electrode terminal with the resin material , heating the cylindrical body to a temperature higher than the melting temperature of the resin material, and then solidifying below the melting temperature. The manufacturing method of the electrical decoration apparatus characterized by the resin material having flexibility. The inner surface of the cylindrical body, the provided adhesive the is melted at above the melting temperature temperature of the resin material is applied, when the cylindrical body is heated at said temperature above the melting temperature of the resin material The method for manufacturing an electrical decoration device according to claim 6, wherein the adhesive is melted. The resin material has a predetermined shape having a groove portion on the outer periphery before melting , the conductive wire and the electrode terminal are disposed in the predetermined shape of the groove portion, and the periphery of the conductive wire, the electrode terminal, and the resin material is arranged. The method for manufacturing an electrical decoration device according to claim 6 or 7, wherein the heating is performed by covering the cylindrical body and the cylindrical body and the resin material . A plurality of the conducting wires and the electrode terminals are provided, and the conducting wires are connected to the electrode terminals,
The resin material has a plurality of the groove portions before melting, and the resin material is sandwiched between the conductor wires and the electrode terminals when the conductor wires and the electrode terminals are respectively disposed in the groove portions. method of manufacturing a illumination device according to claim 8, wherein the to be.   The width between each bottom face of these groove parts is larger than each separation width of these electrode terminals, The manufacturing method of the electrical decoration apparatus of Claim 9 characterized by the above-mentioned.

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