JP2009038299A - Holder connector for led and its connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holder connector for an LED having improved assembleability and work efficiency, and its connection structure. <P>SOLUTION: The holder connector for the LED is provided with an insulating holder 10 for housing a white LED functioning as a headlamp of an automobile or the like and a pair of electric connectors 20 disposed in the holder 10 to electrically connect the white LED and a flexible circuit board together. The holder 10 is formed of a plate part 11 facing the white LED and a contact part 12 formed at the peripheral edge of the plate part 11 and brought into contact with the periphery of the light emitting part of the white LED, the light emitting part of the white LED is passed through and exposed from the plate part 11, and each of the electric connectors 20 is inserted into the plate part 11 of the holder 10 and electrically interposed between the white LED and the flexible circuit board. Since the white LED is housed, positioned and electrically connected simultaneously with housing by using the holder 10 and the pair of integrated electric connectors 20, the assembleability and the work efficiency of the holder connector can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an LED holder connector that functions as a lighting device for a transportation facility, a traffic signal device, and the like, and a connection structure thereof.

In recent years, attention has been paid to small white LEDs (light emitting diodes) that require little maintenance, do not use mercury, and have a small mass (see Patent Documents 1, 2, and 3). This type of white LED is electrically connected to a flexible circuit board (not shown) or the like via a small conductive rubber or the like, or soldered with solder, and can obtain a wide emission spectrum with high output.
JP 2007-106191 A JP 2007-128728 A JP 2007-59202 A

  As described above, the conventional white LED is simply connected to the flexible circuit board or the like via a small conductive rubber or the like, and thus has a problem that the assemblability is poor. In addition, soldering may be employed when mounting the white LED, but when mounting a small white LED, the soldering operation becomes extremely complicated, and there is a possibility that a long time is required for the assembly operation. .

  The present invention has been made in view of the above, and an object of the present invention is to provide an LED holder connector and a connection structure thereof that can improve assemblability and workability.

In order to solve the above-described problems, the present invention includes an insulating holder for housing the LED, and an electrical connector attached to the holder to electrically connect the LED and the electrical joint. ,
The holder includes a plate portion that faces the LED and a contact portion that is formed on the plate portion and contacts the periphery of the light emitting portion of the LED. The light emitting portion of the LED is exposed from either the plate portion or the contact portion. ,
An electrical connector is attached to either the plate portion or the contact portion of the holder, and is interposed between the conductor portions of the LED and the electrical joint.

In addition, while integrating a holder and an electrical connector by insert molding, a holder can be shape | molded with a heat resistant molding material.
The holder includes a plate portion facing the plurality of LEDs, and a plurality of contact portions formed on the plate portion and contacting the periphery of the light emitting portion of each LED, and any of the plate portions and the plurality of contact portions is included. Thus, the light emitting part of the LED can be exposed.

Further, the free end of the contact portion of the holder can be bent and hooked around the light emitting portion of the LED.
Further, the electrical connector includes an elastic insulating elastomer interposed between the conductor portions of the LED and the electric joint, and a conductor provided on the insulating elastomer and contacting between the conductor portions of the LED and the electric joint. It is good to include.

In addition, the conductor of the electrical connector can be an elastic conductive elastomer that is provided between a plurality of insulating elastomers and contacts between the conductor portions of the LED and the electrical joint.
In addition, the conductor of the electrical connector can be a plurality of conductive wires that are provided in an insulating elastomer so that both ends are exposed and bendably contact between the conductors of the LED and the electrical joint. is there.

  Furthermore, in order to solve the above-mentioned problems, the present invention is characterized in that the LED and the electrical joint are electrically connected by the LED holder connector according to any one of claims 1 to 5.

  Here, the number and type of the LEDs in the claims are not particularly limited. The holder and the electrical connector are preferably integrated by insert molding, but can also be integrated by press-fitting the electrical connector into the holder later. The holder may store a single LED or may store a plurality of LEDs side by side.

  The electrical joint includes at least various electronic components and circuit boards that do not interfere with the light emission of the LED. Furthermore, the holder connector for LED according to the present invention includes a lighting device for a transportation facility (for example, various automobiles, motorcycles, snow vehicles, water bikes, etc.), a mobile phone with camera, a portable game machine, a liquid crystal television, a video camera, a personal computer, Widely used in residential lighting equipment, toys, car navigation systems, traffic lights, outdoor signage, etc.

  According to the present invention, when the LED and the electrical joint are electrically connected, the LED is accommodated in the holder, the light emitting portion is exposed, and the LED and the plurality of electrical connectors of the holder are in contact with each other. Then, if each electrical connector of the holder is brought into contact with the electrical joint so as to be conductive, the LED and the electrical joint can be electrically connected.

  According to the present invention, the holder is formed from a plate portion facing the LED and a contact portion that is formed on the plate portion and contacts the periphery of the light emitting portion of the LED, and from either of the plate portion and the contact portion. Since the light emitting part of the LED is exposed and the electric connector is attached to either the plate part or the contact part of the holder and interposed between the conductor parts of the LED and the electric joint, it is possible to improve the assemblability and workability. There is an effect that can be done.

  Also, if the holder and the electrical connector are integrated by insert molding, the holder connector for LED with much higher strength and durability can be manufactured relatively easily compared to the case where it is inserted and bonded in the subsequent process. Can be easily assembled. In addition, if the holder is molded from a heat-resistant molding material, it is possible to suppress and prevent damage to the holder due to light emission of the high-brightness LED.

  Furthermore, if the free end of the contact part of the holder is bent and hooked around the light emitting part of the LED, the LED and the holder can be integrated with a simple configuration, and the LED can be prevented from falling off the holder. Become.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 6, an LED holder connector according to the present embodiment includes a white LED 1 that functions as a headlight of an automobile or the like. A holder 10 (FIG. 4 and the like) to be stored, a pair of electrical connectors 20 that are disposed in the holder 10 and electrically connect the white LED 1 and a flexible circuit board that is an electrical joint, and the flexible circuit board are covered from above. And a cover sheet that exposes the light emitting part 3 of the white LED 1.

  As shown in FIG. 1 and FIG. 2, the white LED 1 includes a flat rectangular package plate 2 that is adhered to an attachment portion of a substrate or the like using an adhesive tape or the like. 3 is mounted, and the light emitting portion 3 is covered from above with a substantially hemispherical shell-shaped lens 4 having optical transparency. Electrodes 5 functioning as an anode and a cathode are respectively attached to both ends of the surface of the package plate 2.

The manufacturing method of the holder 10 and the pair of electrical connectors 20 is not particularly limited, but insert molding in which the pair of electrical connectors 20 is inserted into a mold for molding the holder 10 in order to obtain high reliability. Are integrated.
As shown in FIG. 3 and FIG. 4, the holder 10 has a flat rectangular plate portion 11 that is opposed to the surface of the package plate 2 of the white LED 1 from above and penetrates the light emitting portion 3 and its lens 4, and this hollow It is formed by linearly hanging from the periphery of the plate portion 11 and provided with a contact portion 12 that presses the periphery of the package plate 2 from the outside.

  The holder 10 includes a plate part 11 and a contact part 12 using a molding material having insulating properties, heat resistance, elasticity, for example, silicone rubber, urethane, epoxy resin, polyphenylene sulfide, etc. that are excellent in weather resistance, electrical insulation, and the like. The lower surface which is the free end of the contact portion 12 is aligned with the back surface of the package plate 2 so as not to interfere with the adhesion of the package plate 2 using an adhesive tape or the like.

  Although not shown, the flexible circuit board is formed with, for example, a horizontally long counter substrate portion facing the holder 10 and an elongated cord portion that is bent and extended from the end of the counter substrate portion. In the counter substrate portion of the flexible circuit board, a white LED 1 of the holder 10, specifically, a rectangular through hole 24 that penetrates and exposes the light emitting portion 3 and its lens 4 is perforated. A plurality of lands that are in surface contact with each other are formed as conductor portions.

  As shown in FIGS. 3 to 5, each electrical connector 20 includes, for example, an elastic insulating elastomer 21 in the form of an elongated small block and a conductive elastomer 22 that is a conductor, and a pair of opposing insulations. The conductive elastomer 22 having the same shape is sandwiched between the conductive elastomers 21 and has a feature that the resistance is stabilized even when used at a high temperature.

  As the insulating elastomer 21 of the electrical connector 20, for example, silicone rubber having excellent heat resistance, weather resistance, cold resistance, flame retardancy, electrical insulation, and the like is used. The conductive elastomer 22 is formed, for example, by blending conductive fillers such as silver particles and flexible metal wires into silicone rubber. Such an electrical connector 20 is integrated with the surface end portion of the plate portion 11 of the holder 10 and interposed between the white LED 1 and the flexible circuit board so as to be compressible, and is in surface contact with the electrode 5 of the white LED 1 from above. At the same time, it is pressed against the land of the flexible circuit board from above.

  Each electrical connector 20 is not limited to the above configuration. For example, as shown in FIG. 6, it may be formed by alternately arranging a plurality of elastic insulating elastomers 21 in the form of elongated and small blocks and conductive elastomers 22 having the same shape.

  Although not shown, the cover sheet is formed into a substantially horizontally long rectangular shape corresponding to the counter substrate portion of the flexible circuit board using a predetermined metal material, and the white LED 1 of the holder 10, specifically, the light emitting portion 3 and its A flat rectangular exposure hole for exposing the lens 4 is drilled. The cover sheet and the flexible circuit board may be laminated in advance and integrated before assembling or not.

  In the above, when the white LED 1 and the flexible circuit board are electrically connected, the white LED 1 is accommodated in the holder 10 to expose the light emitting portion 3 and the lens 4, and the pair of electrodes 5 of the white LED 1 and the holder 10 are exposed. The white LED 1 accommodated in the holder 10 is adhered to the substrate or the like with an adhesive tape.

  Then, the flexible circuit board is opposed to the holder 10 via the cover sheet, and each electrical connector 20 of the holder 10 and the land of the flexible circuit board are brought into surface contact so as to be conductive, and then the cover sheet is screwed by a plurality of fasteners. If the flexible circuit board and the electrical connector 20 are protected by the cover sheet, the white LED 1 and the flexible circuit board can be electrically connected.

  According to the above configuration, the white LED 1 is accommodated / positioned using the holder 10 or a pair of integrated electrical connectors 20 instead of being individually connected by small pieces of conductive rubber, or simultaneously with the accommodation. Since it is electrically connected, assembly and workability can be significantly improved. Further, since the soldering can be omitted when the white LED 1 is mounted, even when the small white LED 1 is mounted, the assembly work does not take a long time.

  Moreover, as the electrical connector 20, not only the conductive elastomer 22 generally lacking in strength but also a plurality of insulating elastomers 21 are used together, so that sufficient mechanical strength and hardness can be easily secured. It becomes possible. Furthermore, since the conductive elastomer 22 of the electrical connector 20 is formed by blending rubber with a conductive filler such as silver particles, a stable electrical connection can be achieved even under high temperatures (eg, 130 ° C.) associated with lighting of the headlamp. A structure can be secured.

  Next, FIG. 7 shows a second embodiment of the present invention. In this case, the free end 13, that is, the lower end of the contact portion 12 of the holder 10 is bent in a substantially L shape inward in the width direction. The free end 13 of the contact portion 12 is detachably locked to the peripheral edge of the back surface of the package plate 2 of the white LED 1. The other parts are the same as those in the above embodiment, and the description thereof is omitted.

  In this embodiment, the same effect as the above embodiment can be expected, and the free end 13 of the contact portion 12 of the holder 10 turns around and engages with the peripheral edge of the back surface of the package plate 2 of the white LED 1. It is obvious that the white LED 1 and the holder 10 can be integrated with a simple structure, and the white LED 1 can be effectively prevented from being displaced or dropped.

  In addition, the cover sheet of the said embodiment can be abbreviate | omitted or changed as needed. The conductor of the electrical connector 20 is not limited to the above embodiment. For example, the conductor may be embedded in the insulating elastomer 21 so that both ends are exposed, and a plurality of conductive wires may be bent between the conductor portions of the white LED 1 and the flexible circuit board.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective explanatory view schematically showing an LED in an embodiment of an LED holder connector and its connection structure according to the present invention. FIG. 2 is an explanatory plan view of FIG. 1. It is a plane explanatory view showing typically the holder in the embodiment of the holder connector for LED concerning the present invention. It is sectional explanatory drawing which shows typically the holder in embodiment of the holder connector for LED which concerns on this invention. It is explanatory drawing which shows typically the electrical connector in embodiment of the holder connector for LED which concerns on this invention, and its connection structure. It is explanatory drawing which shows typically the other electrical connector in embodiment of the holder connector for LED which concerns on this invention, and its connection structure. FIG. 6 is a cross-sectional explanatory view schematically showing a second embodiment of an LED holder connector and its connection structure according to the present invention.

Explanation of symbols

1 White LED (LED)
2 Package plate 3 Light emitting portion 4 Lens 5 Electrode 10 Holder 11 Plate portion 12 Contact portion 13 Free end 20 Electrical connector 21 Insulating elastomer 22 Conductive elastomer (conductor)

Claims (6)

An LED holder connector comprising: an insulative holder for housing the LED; and an electrical connector that is attached to the holder and electrically connects the LED and the electrical joint,
The holder includes a plate portion that faces the LED and a contact portion that is formed on the plate portion and contacts the periphery of the light emitting portion of the LED. The light emitting portion of the LED is exposed from either the plate portion or the contact portion. ,
A holder connector for LED, wherein an electrical connector is attached to either the plate portion or the contact portion of the holder and is interposed between the conductor portions of the LED and the electrical joint.   2. The holder connector for LED according to claim 1, wherein the holder and the electrical connector are integrated by insert molding, and the holder is molded from a heat-resistant molding material.   The LED holder connector according to claim 1 or 2, wherein the free end of the contact portion of the holder is bent and hooked around the light emitting portion of the LED.   The electrical connector includes an elastic insulating elastomer interposed between the conductor portions of the LED and the electric joint, and a conductor provided on the insulating elastomer and contacting between the conductor portions of the LED and the electric joint. The holder connector for LED according to claim 1, 2, or 3.   5. The LED holder connector according to claim 4, wherein the conductor of the electric connector is an elastic conductive elastomer that is provided between a plurality of insulating elastomers and is in contact between the conductor portions of the LED and the electric joint.   A connection structure for an LED holder connector, wherein the LED and the electrical joint are electrically connected by the LED holder connector according to any one of claims 1 to 5.

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