JP2006303283A - Flexible wiring board mounted with light-emitting-diode - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a cost without discarding the whole of a module, by easily replacing only a faulty LED by new one. <P>SOLUTION: In a flexible wiring board, conductive-material layers 4 are formed on a base material 10, and an insulating coat 2 of a flexible wiring board 1 having the coat 2 wherewith the conductive-material layers 4 are coated is so opened as to mount a light emitting diode 3 on exposed lands 5 of the conductive-material layers 4. With respect to the flexible wiring board, preliminary lands 6 are so formed near the place whereon the light emitting diode 3 is mounted as to expose to the external the same conductive-material layers 4 as the lands 5. When the faulty light emitting diode 3 is present on the end side of the flexible wiring board 1, the end side of the flexible wiring board 1 is so cut off constitutionally as to be able to mount a new light emitting diode 30 on the preliminary lands 6. Alternatively, when the preliminary lands 6 are formed on the end side of the flexible wiring board 1, the faulty light emitting diode 3 is so shifted from its disposed place and the end side of the flexible wiring board 1 is so folded constitutionally as to be able to mount the new light emitting diode 30 on the positions of the lands 6 by superimposing the lands 6 on the positions of the lands 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a light-emitting diode-mounted flexible wiring board suitable for use in automobile mark plates, side moldings on the side of a vehicle body, various indoor indicator lights, and the like.

2. Description of the Related Art Conventionally, a flexible printed circuit board in which light emitting diodes (LEDs) are mounted at predetermined intervals is attached to a side surface of a vehicle body to form a side molding. A flexible printed circuit board is fixed to the vehicle body with double-sided tape, an inner lens is attached to cover the LED, and an outer lens is further attached (see Patent Document 1).
Japanese Examined Patent Publication No. 7-70244 (page 3, FIG. 7)

  The conventional example is a modularized lighting device that uses LEDs for easy mounting and replacement. However, when even one LED stops emitting light, the entire module must be replaced. Therefore, it was disadvantageous in terms of cost. Further, when replacing a failed light emitting diode, it is necessary to dismantle the joint portion by soldering or a conductive adhesive, which is not realistic in terms of man-hours.

  Therefore, an object of the present invention is to provide a light-emitting diode-mounted flexible wiring board that can easily replace only an LED that has stopped emitting light, thereby reducing costs.

  In order to achieve the above-described object, the present invention provides a light-emitting diode having a conductive material layer formed by forming a conductive material layer on a base material and opening the insulating coating of a flexible wiring board covered with the conductive coating. In the flexible wiring board mounted with the light emitting diode mounted on the exposed land portion, a spare land portion with the same conductive material layer exposed is formed in the vicinity of the portion where the light emitting diode is mounted, and the failed light emitting diode is on the front end side. In some cases, the tip of the flexible circuit board is cut off and a new light emitting diode can be mounted on the spare land. Alternatively, if the spare land is formed on the tip of the flexible circuit board, New light emission by shifting the diode from the installation location, folding the tip of the flexible wiring board, and placing the spare land on the land Diode is obtained by configured to implement.

  According to the present invention, the conductive material layer is formed on the base material, and the insulating coating of the flexible wiring board in which the conductive material layer is covered with the insulating coating is opened, and the light emitting diode is mounted on the land portion where the conductive material layer is exposed. In the light-emitting diode-mounted flexible wiring board, a preliminary land portion that exposes the same conductive material layer is formed in the vicinity of the portion where the light-emitting diode is mounted. When the front end side of the board is separated and a new light emitting diode can be mounted on the spare land part, or when the spare land part is formed on the front end side of the flexible wiring board, the failed light emitting diode is shifted from the installation location. Folding the front end of the flexible wiring board and stacking the spare land on the land position allows mounting of a new light emitting diode Since it is configured so as to enable the exchange of only the LED no longer emits light, and easy to made it possible to reduce costs.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2, a light emitting diode (LED) 3 is mounted on a land portion 5 where the insulating coating 2 of the flexible wiring board 1 is opened and the conductive material layer 4 is exposed. The conductive material layer 4 is printed on the base material 10. In this example, a spare land portion 6 with the same conductive material layer 4 exposed is formed on the tip side in the vicinity of the place where the LED 3 is mounted. In the embodiment shown in FIG. 1 and FIG. 2, the spare land portion 6 is formed on the tip side, and in the state of normal use, as shown in FIG. Fold the back side of 1 to use. When the LED 3 breaks down during use, the LED 3 is shifted from the installation location, and a new LED 30 is mounted on the spare land 6 as shown in FIG. In the case where a new LED 30 is attached to the spare land portion 6 on the front end side, the front end side is folded to the front side of the flexible wiring board 1 as shown in FIG. As shown in FIG. In FIG. 4, symbol A indicates the first folding position, and symbol B indicates the second folding position. The way of bending the distal end side of the flexible wiring board 1 after the replacement of the LED 3 is as shown in FIGS. 3 and 5, so that the installation positions of the LED 3 and the LED 30 do not change before and after the replacement. Since only the failed LED 3 can be replaced in this way, there is no need to replace the entire module.

  FIG. 6 shows another embodiment, and the land portion 5 is formed on the tip side, and the LED 3 mounted on the tip side is first bent at a position A as shown in FIG. Fold it to the opposite side at the point of use. In such a usage method, when the LED 3 shown in FIG. 7 breaks down, as shown in FIG. 8, the front end side of the flexible wiring board 1 is cut off at a position A. If a new LED 30 is mounted on the spare land 6 and used, the new LED 30 is positioned at the same position as the LED 3 shown in FIG.

  FIG. 9 shows the flexible wiring board 1 in which the LED 3 is mounted on the tip side as in FIG. 6. When the LED 3 is used in this state, when the LED 3 breaks down, the flexible wiring board 1 is cut at the point A, The tip side including the failed LED 3 is discarded, the connection land portion 7 is formed, and the connection piece 8 on which the new LED 30 is mounted is connected to the spare land portion 6 of the flexible wiring board 1. As shown in FIGS. 11 and 12, the connection mode is such that the portion C of the connection piece 8 is bent so that the spare land portion 6 and the connection land portion 7 are electrically connected. This connection is made using terminals such as caulking and piercing.

The perspective view which shows embodiment of this invention. Sectional drawing of FIG. The perspective view which shows the use condition of FIG. The perspective view which mounted new LED in the reserve land part. The perspective view which shows the use condition of what is shown in FIG. The perspective view which shows other embodiment. The perspective view which shows the use condition of FIG. The perspective view of the state which cuts off the front end side when LED of FIG. 6 fails. The perspective view which shows another embodiment. FIG. 10 is a perspective view of disconnecting the failed LED in FIG. 9 and connecting separate connection pieces. The perspective view of the state which connected the piece for connection. The side view of FIG.

Explanation of symbols

1 Flexible wiring board 2 Insulation coating 3,30 LED
4 Conductive Material Layer 5 Land Part 6 Spare Land Part 10 Base Material

Claims (2)

Light emitting diode mounting flexible in which a conductive material layer is formed on a base material, and the insulating coating of the flexible wiring board in which the conductive material layer is covered with the insulating coating is opened, and the light emitting diode is mounted on the land portion where the conductive material layer is exposed. In the wiring board,
Forming a preliminary land portion exposing the same conductive material layer in the vicinity of the place where the light emitting diode is mounted;
When the failed light emitting diode is on the tip side, the tip side of the flexible wiring board is cut off, and a new light emitting diode can be mounted on the spare land,
Alternatively, when the spare land portion is formed on the front end side of the flexible wiring board, the failed light emitting diode is shifted from the installation location, the front end side of the flexible wiring board is folded, and the spare land portion is overlaid on the land portion position. A flexible light-emitting board mounted with a light-emitting diode, characterized in that a new light-emitting diode can be mounted.   The connection land portion of the connection piece on which the new light emitting diode is mounted is connected to the spare land portion when the front end side of the flexible wiring board including the front end side light emitting diode is cut off. Light-emitting diode mounted flexible wiring board.

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