JP2015032361A - Lighting base plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel lighting device making a clear distinction from existing lighting devices.SOLUTION: A lighting base substrate 1 comprises: a band substrate 2 having positive-electrode-side and negative-electrode-side band plates 21 and 22 made of conductive metal and a resin part 24 formed by injection molding with both of the positive-electrode-side and negative-electrode-side band plates 21 and 22 inserted therein and integrally holding both of the positive-electrode-side and negative-electrode-side band plates 21 and 22 under insulated state; and a plurality of LED chips 3 arranged to be spaced apart in an extending direction of the band substrate 2 and electrically connected to both of the positive-electrode-side and negative-electrode-side band plates 21 and 22 respectively. The lighting base substrate 1 is configured to electrically and physically connect the plurality of band substrates 2. The plurality of band substrates 2 are connected electrically and physically through a connector 11, for example.

Description

  The present invention relates to an illumination substrate, and more particularly to an illumination substrate equipped with a plurality of LEDs as a light source.

  An example of a substrate for mounting an LED is described in Patent Document 1 below. This substrate has a resin part that is formed by injection molding by inserting both positive and negative strips made of conductive metal, and both positive and negative strips, and holding both positive and negative strips in an insulated state. As a whole, it has a belt shape. A plurality of light emitting diodes (LEDs) are mounted on one surface of the substrate (strip-shaped substrate) so as to be separated from each other in the extending direction. This strip-shaped substrate can be manufactured at a low cost because it does not use a printed circuit board, and has a feature such that it can be stored and transported in a rolled state because of its high flexibility.

JP 2011-146187 A

  However, the belt-like substrate of Patent Document 1 is only for providing an alternative to the existing fluorescent lamp. That is, the invention of Patent Document 1 is the same as an existing fluorescent lamp by cutting the above-mentioned band-shaped substrate into a fixed size determined by the length and shape of the fluorescent tube to be used and then enclosing it in the fluorescent tube. It is intended to produce and provide a size LED lamp. In Patent Document 1, as a product that can meet new market demands in recent years, no study has been made to further increase the added value.

  The inventors of the present application have studied the utilization of the above-described belt-shaped substrate, and have come up with the idea that a lighting device having high added value can be provided by utilizing the belt-shaped substrate in the examination process. An object of the present invention is to provide a lighting substrate with high added value that can realize such an idea and can be used as various lighting devices.

  As technical means for achieving the above object, in the present invention, the positive and negative side strips made of conductive metal, and both positive and negative strips are formed by injection molding. A belt-like substrate comprising: a belt-like substrate having a resin portion that is integrally held in an insulated state; and a plurality of LEDs that are spaced apart in the direction in which the belt-like substrate extends and are electrically connected to both the positive and negative belt plates Is provided with a plurality of electrical and physical connections.

  In the lighting substrate according to the present invention, the individual band-shaped substrates constituting this are mainly formed by two metal band plates and a resin portion that holds both the band plates in an insulating state. In consideration of the thickness of the strip (metal plate) to be used, the thickness and form of the resin portion, etc., an arbitrary function can be imparted to each strip-shaped substrate. For example, when a thin strip is used and the resin portion is formed thin, a high flexibility can be imparted to the strip substrate, so that an illumination substrate having a high degree of freedom in deformation can be obtained. Further, for example, if a relatively thick strip is used, a highly rigid strip substrate can be obtained. Therefore, an illumination substrate that can be manufactured at low cost but has excellent shape stability can be obtained. Furthermore, in each band-shaped substrate, both the positive and negative band plates are covered with the resin part and are in an insulating state, and therefore, short-circuiting between the two band plates due to water and foreign matters is prevented by taking into account the form of the resin part. be able to. Therefore, it is possible to provide a structure suitable not only for indoor use but also for outdoor use. Therefore, according to the board | substrate for illumination which concerns on this invention, it becomes possible to provide a high added value illuminating device which has the outstanding characteristics, such as a high degree of freedom of selection of a form or an installation place.

  As long as the board | substrate for illumination of the said structure is comprised by electrically and physically connecting a some strip | belt-shaped board | substrate, the connection aspect of strip | belt-shaped board | substrates can be selected arbitrarily. That is, the plurality of strip-like substrates can be connected in a plane (connected so that the illumination substrate has a substantially flat plate shape as a whole) and connected in a three-dimensional manner (but has a three-dimensional shape as a whole). Can also be connected).

  The plurality of strip substrates can be directly connected, but in order to prevent external exposure of the terminals provided on the strip substrate, it is preferable that they are connected to each other (electrically and physically connected) via a connector. . When connecting a some strip | belt-shaped board | substrate via a connector, each strip | belt-shaped board | substrate can be connected to a connector so that isolation | separation is possible. If it does in this way, the freedom degree of a form change can be raised further.

  The connector can be provided with a battery for supplying power to the LED. If it does in this way, since it becomes possible to use the board | substrate for illumination as an illuminating device as it is, the freedom degree of an installation place and a usage method increases. Therefore, the illumination substrate can be used not only as a permanent illumination device such as a ceiling light but also as an emergency illumination device.

  In the above configuration, the plurality of LEDs are desirably connected in parallel to both the positive and negative strips. In this way, for example, even if the strip-shaped substrate is cut at an appropriate position in the length direction, disconnection does not occur on the side closer to the power source (battery) than the cut position. Therefore, it is possible to cut a part of the belt-like substrate (change the length of the belt-like substrate), and the degree of freedom in changing the shape is further improved.

  As described above, the lighting substrate according to the present invention can form individual strip-shaped substrates constituting the thin-walled, lightweight, and easily deformable, and can connect the strip-shaped substrates in an arbitrary manner. Therefore, an arbitrary form can be taken, and the degree of freedom in attachment and the method of use are high. Therefore, it is possible to provide a lighting device with high added value that is different from existing lighting devices.

(A) is a schematic plan view of the illumination substrate according to the first embodiment of the present invention, and (b) is an enlarged view of part A in (a). It is a schematic plan view of the strip | belt-shaped board | substrate which comprises the board | substrate for illumination shown in FIG. FIG. 3 is a schematic sectional view taken along line XX in FIG. 2. FIG. 3 is a schematic cross-sectional view taken along line YY in FIG. 2. It is a perspective view of a LED chip. It is a top view which shows typically the manufacturing process of a strip | belt-shaped board | substrate. It is a schematic plan view of the board | substrate for illumination which concerns on 2nd Embodiment of this invention. It is a schematic perspective view of the board | substrate for illumination which concerns on 3rd Embodiment of this invention. It is a schematic front view of the board | substrate for illumination which concerns on 4th Embodiment of this invention. It is a schematic front view of the board | substrate for illumination which concerns on 5th Embodiment of this invention. It is a schematic sectional drawing of the strip | belt-shaped board | substrate which concerns on a modification. (A) A figure is a schematic plan view which shows the state which connected the two strip | belt-shaped board | substrates with the connector which concerns on a modification, (b) A figure is X1-X1 arrow sectional drawing shown in (a) figure.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1A and FIG. 1B respectively show a schematic plan view and a partially enlarged view of the illumination substrate 1 according to the first embodiment of the present invention. The lighting substrate 1 includes a plurality of (in the illustrated example, a total of 12) strip-shaped substrates 2 and a plurality of LEDs (which are spaced apart from each other in the extending direction of the respective strip-shaped substrates 2 and are electrically connected to the strip-shaped substrate 2 ( LED chip) 3 and a connector 11 for electrically and physically connecting a plurality of strip-like substrates 2. The plurality of strip-like substrates 2 are disposed (planarly connected) in the same (substantially the same) plane, and therefore the illumination substrate 1 has a substantially flat plate shape as a whole.

  In the present embodiment, two types of connectors 11 (11A, 11B) having different shapes when viewed in plan are used. Specifically, it has a regular octagonal shape in a plan view, and is substantially trapezoidal in a plan view and is disposed on the outer side in the circumferential direction of the first connector 11A. The second connector 11B is used, and four second connectors 11B are arranged at a pitch of 90 °. Two strip-shaped substrates 2 are disposed between the second connectors 11B and 11B adjacent in the circumferential direction, and one strip-shaped substrate 2 is disposed between the first connector 11A and each second connector 11B. ing. Therefore, the first and second connectors 11A and 11B in the illustrated example are compatible with the terminals (positive and negative terminals) 23 and 23 provided at the lengthwise ends of the respective strip-like substrates 2, and There are at least 4 pairs and 5 pairs of terminals (positive and negative terminals) 12 and 12 to which both terminals 23 and 23 are electrically connected.

  In the lighting substrate 1, for example, the first connector 11A disposed in the center has a configuration that can be connected to an AC power source (not shown) and can convert AC power supplied from the AC power source into DC power. doing. Although not shown in detail, the terminal 23 on the positive side of each belt-like substrate 2 is electrically connected to each other via the terminal 12 on the positive side of the connector 11 (11A, 11B) to form a series of positive circuit. It is composed. Similarly, the terminal 23 on the negative side of each belt-like substrate 2 is electrically connected to each other via the terminal 12 on the negative side of the connector 11 to constitute a series of negative circuit. Accordingly, the AC power supplied from the AC power source is converted into DC power in the first connector 11A and then supplied to each strip substrate 2, thereby the LED chip 3 electrically connected to each strip substrate 2. Lights up. However, the present invention is not limited to this configuration, and a DC power supply may be provided on the illumination substrate 1 or a configuration in which the illumination substrate 1 is directly supplied with a DC power supply may be employed.

  Next, the detailed structure of the strip substrate 2 will be described.

  As shown in FIGS. 2 to 4, the belt-like substrate 2 is a belt-plate-like shape in which two belt plates (positive and negative side belt plates) 21 and 22 arranged in parallel are integrally held by a resin portion 24. It has a form. The two strips 21 and 22 used in the present embodiment are both flexible metal plates having a thickness of about 0.01 mm to 3 mm (for example, 0.1 mm), such as copper plates and aluminum plates. , Formed of stainless steel plate. Electrically connected to terminals 12 and 12 of the connector 11 (see FIG. 1 (b)) arranged on both sides in the longitudinal direction of the respective strip-like substrates 2 at one end and the other end in the longitudinal direction of the two strip plates 21 and 22. Terminals (positive and negative terminals) 23, 23 connected to each other are respectively formed. A conductive metal film can be formed on the surfaces of the strips 21 and 22 by tin plating or the like, if necessary.

  The resin portion 24 covers both sides of the strips 21 and 22 excluding the terminal 23 over the entire axial direction, and satisfies the gap between the two strips 21 and 22. As will be described later, the resin portion 24 is formed by resin injection molding using two strips 21 and 22 as insert parts. The resin material for molding of the resin portion 24 can be arbitrarily selected according to the use conditions of the lighting substrate 1, and for example, a material mainly composed of LCP, PPS, POM, PEEK or the like is used. In the resin material for molding the resin part 24, one or more suitable fillers can be blended within a range that does not impair the insulating properties.

  In the resin portion 24, a plurality of window portions 26 are formed at equal or unequal pitches along the direction in which the strips 21 and 22 extend. In this embodiment, the window portions 26 are formed at equal pitches. The window portion 26 is between one of the two strips 21 and 22, one surface of the strip substrate 2 (the surface on the LED chip 3 mounting side, hereinafter referred to as “surface”) and the other surface (hereinafter referred to as “surface”). (Referred to as “back side”). The inner edge portions of the two band plates 21 and 22 protrude into the window portion 26, and the inner surface of the window portion 26 accommodates the LED chip 3 on the surface side from the inner edge portions of the protruding band plates 21 and 22. It has a shape that can be done. The inner edge portions of the strips 21 and 22 protruding into the window portion 26 function as terminals (positive and negative terminals) 27 and 27.

  In the resin portion 24, one or a plurality of attachment holes 28 that are open on both the front and back surfaces of the belt-like substrate 2 are formed in a region between the two belt plates 21 and 22. The attachment hole 28 is a hole into which a fastening member such as a tapping screw can be screwed when attaching the lighting substrate 1 (band-like substrate 2) to the wall surface of the structure. The attachment holes 28 do not necessarily have to be opened on both the front and back surfaces of the belt-like substrate 2, and may be formed on the surface only.

  The mounting hole 28 is not necessarily provided and may be omitted. For example, the connector 11 is provided with an attachment hole having the same function as the attachment hole 28 of the belt-like substrate 2, and the attachment strength of the illumination substrate 1 to the structure or the like is sufficient even by screwing a fastening member into the attachment hole. The mounting hole 28 can be omitted if it can be secured.

  As shown in FIGS. 3 and 4, on the surface of the resin portion 24, the periphery of the window portion 26 and the mounting hole 28 is raised more than other places. Except for the raised portions 26a and 28a, the resin portion 24 has a uniform thickness T1. The belt-like substrate 2 is provided with sufficient flexibility, and the belt-like substrate 2 is curved in a convex shape on the front side or back side (for the belt-like substrate 2 in the curved shape with the front side convex, for example, FIG. The thickness of each portion of the resin portion 24 is made as thin as possible. Specifically, the thickness T1 of the resin portion 24 is about 0.3 mm to 1.5 mm (for example, 1 mm), and the thickness Tmax of the raised portions 26a and 28a having the maximum thickness is about 1.5 mm to 4 mm (for example, 2 mm). The back surface of the resin part 24 is a flat surface without unevenness.

  The LED chip 3 means a so-called surface mount type (chip type) LED as shown in FIG. The configuration and form of the LED chip 3 is arbitrary, and FIG. 5 illustrates the LED chip 3 that is a multichip having a plurality (three) of light emitting elements 31 and packaged in a thin rectangular parallelepiped shape. . As the LED chip 3, in addition to the multichip, a single chip having one light emitting element 31 can also be used. In addition to the chip type, a bullet type can also be used as the LED. The LED chip 3 is provided with terminals (positive and negative terminals) 32 and 32 corresponding to the number of light emitting elements 31. Since the LED chip 3 in the illustrated example includes three light emitting elements 31, the LED chip 3 includes three pairs of positive and negative terminals 32 and 32. Each terminal 32 has an L-shaped cross section, protrudes from the central portion of the LED chip 3 to the outside, and extends along the side surface and the bottom surface. The emission color of the LED chip 3 is arbitrary, and for example, white can be used.

  As shown in FIG. 3, the LED chips 3 are attached to the belt-like substrate 2 by being fitted one by one into the window portion 26 of the resin portion 24, and the LED chip 3 fitted into the window portion 26 is the belt-like substrate. 2 is also removable. The LED chip 3 is mounted on the belt-like substrate 2 so that the upper surface of the LED chip 3 is at the same level as the upper surface of the raised portion 26a of the resin portion 24 (see FIG. 4) or lower than the upper surface of the raised portion 26a. Is done. When the LED chip 3 is fitted into the window portion 26, the terminals 32 and 32 of the LED chip 3 are brought into contact with the terminals 27 and 27 of the band plates 21 and 22 protruding into the window portion 26, respectively. Thereby, the electrical conductivity between the strips 21 and 22 and each LED chip 3 is ensured. From the standpoint of stabilizing the energized state between the strip plates 21 and 22 (band substrate 2) and each LED chip 3, the strip substrate 2 has a disconnection that engages with the LED chip 3 in the disconnection direction of the LED chip 3. A stop structure is preferably provided. The retaining structure is formed, for example, by forming a resin engaging portion that engages with the upper surface 32a (see FIGS. 4 and 5) of the terminal 32 of the LED chip 3 on the inner surface of the window portion 26 of the resin portion 24, or This is realized by forming an engaging portion that engages with the upper surface 32a (see FIGS. 4 and 5) of the terminal 32 of the LED chip 3 in the band plates 21 and 22 by pressing or the like.

  In FIG. 2 and FIG. 3, the LED chip 3 is not fitted in some of the window portions 26. This is to clarify the configuration of the belt-like substrate 2 by clearly showing the terminals 27 on the drawing, and the LED chips 3 are usually fitted in all the window portions 26. However, it is not always necessary to fit the LED chips 3 in all the window portions 26. That is, the LED chip 3 may be attached only to a part of the window portions 26, and the attachment of the LED chip 3 to the other window portions 26 may be omitted.

  The LED chip 3 can be mounted on the belt-like substrate 2 by soldering the terminals 32 and 32 to the terminals 27 and 27 of the belt plates 21 and 22 protruding into the window portion 26. However, in consideration of the attachment property and maintenance property of the LED chip 3, the LED chip 3 is attached to the strip substrate 2 by being fitted into the window portion 26 and can be detached from the strip substrate 2 as described above. Is preferred. This is because if the LED chip 3 is mounted on the belt-like substrate 2 by being fitted into the window portion 26, the manufacturing cost can be reduced by eliminating the labor required for soldering. Further, if the LED chip 3 is removable from the belt-like substrate 2, the LED chip 3 mounted in advance is replaced with an LED chip 3 having a different emission color, or the LED chip 3 that has stopped emitting light is replaced with a new one. It is possible for the user to easily perform operations such as adjusting the screen.

  When the LED chip 3 is mounted on the belt-like substrate 2 having the above-described configuration, the plurality of LED chips 3 are connected in parallel to both the belt plates 21 and 22 of the belt-like substrate 2. Thereby, even when the mounting of the LED chips 3 to some of the window portions 26 is omitted, the LED chips 3 mounted on the window portions 26 can be turned on. In addition, when mounting the LED chip 3 in all the window parts 26, if the structure of the strip | belt-shaped board | substrate 2 is changed, the LED chip 3 can also be connected in series.

  The LED lighting device 1 having the above configuration can be manufactured, for example, by the following procedure.

  First, as shown in FIG. 6, the two strips 21 and 22 guided in parallel with a gap are intermittently fed into the injection molding machine 7 at a predetermined pitch, and the resin is injected into the mold. 24 is formed. Thus, the belt-like substrate 2 in which the two strips 21 and 22 are integrally held by the resin portion 24 and the two strips 21 and 22 are insulated by the resin portion 24 is obtained. A part of the strips 21 and 22 can be punched out by pressing or plastically deformed. In this case, these processes are performed before feeding to the injection molding machine 7.

  Next, (1) cutting process of cutting the strip-shaped substrate 2 to a predetermined length, (2) forming process of the terminal 23 (removal process of a part of the resin part 24), (3) the LED chip 3 to the window part 26 The fitting is executed in an appropriate order, and then the terminal 23 of the strip-shaped substrate 2 is inserted into the connector 11 (11A, 11B), and the terminal 23 of the strip-shaped substrate 2 and the terminal 12 of the connector 11 are brought into contact with each other. Thereby, the lighting substrate 1 shown in FIG. 1 having the plurality of strip-shaped substrates 2 and electrically connected to the plurality of strip-shaped substrates 2 is completed. In addition, the terminal 12 of the connector 11 is formed in the form (it shows with a dashed-dotted line in FIG. 3) which can clamp the terminal 23 of the strip | belt-shaped board | substrate 2 in the thickness direction, for example. According to such a structure, the strip | belt-shaped board | substrate 2 can be connected to the connector 11 so that isolation | separation is possible.

  In FIG. 6, the configuration in which two strips 21 and 22 separated in advance are supplied to the injection molding machine 7, but one strip is fed forward and cut immediately before the injection molding machine 7. It is also possible to divide the strips into two strips 21 and 22 and supply them to the injection molding machine 7. Moreover, the two strips 21 and 22 fed into the injection molding machine 7 may be sequentially unwound from those wound in a roll form, or may be cut in advance to a predetermined length. There may be.

  In the lighting substrate 1 according to the present invention described above, each of the strip-shaped substrates 2 constituting the substrate 2 has two strip plates 21 and 22 having flexibility and both the strip plates 21 and 22 in an insulated state. Since it is formed with the resin part 24 to hold, given the thickness of the band plates 21 and 22 (metal plates) to be used and the thickness and form of the resin part 24, an arbitrary function is given to each band-like substrate 2 can do. In the present embodiment, since the thin strips 21 and 22 are used and the resin portion 24 is formed thin, it is possible to give a high flexibility, that is, a degree of freedom of deformation, to each strip substrate 2. The individual belt-like substrates 2 can be formed in a light weight. Therefore, the lighting substrate 1 according to the present invention can take an arbitrary form and has a high degree of freedom in selecting an installation mode. Therefore, it is possible to provide a new and high added-value lighting device that is different from existing lighting devices.

  In particular, in the illumination substrate 1 of the present embodiment, since each strip substrate 2 is detachably connected to the connector 11, the degree of freedom in changing the configuration is further increased. Further, since the LED chip 3 is connected in parallel to both the positive and negative strips 21 and 22, even if the strip substrate 2 is cut at an appropriate position in the length direction, the side closer to the power source than the cut portion is provided. No disconnection occurs. Therefore, a part of the strip-shaped substrate 2 can be cut (the length dimension of the strip-shaped substrate 2 is changed), and the degree of freedom in changing the configuration is further increased.

  The lighting substrate 1 according to the first embodiment of the present invention has been described above. However, the lighting substrate 1 can be appropriately modified without departing from the gist of the present invention.

  For example, the connection mode of the plurality of strip-like substrates 2 is arbitrary, and FIG. 7 shows a schematic plan view of the illumination substrate 1 (the illumination substrate 1 according to the second embodiment of the present invention) in which the connection mode of the strip-like substrate 2 is changed. The figure is shown. The illumination substrate 1 shown in FIG. 1 has a strip-like substrate 2 radially on substantially the same plane, and a plurality of (a total of 16) strip-like substrates 2 arranged thereon are electrically connected by one connector 11 arranged in the center. As in the case of the illumination substrate 1 shown in FIG. 1 (a), the overall shape is substantially flat. In this illumination substrate 1, a strip-like substrate 2 having terminals 23 and 23 only at one end in the extending direction is used. In this illumination substrate 1, since only one end of each strip substrate 2 is connected to the connector 11, the shape of each strip substrate 2 is changed as compared with the illumination substrate 1 shown in FIG. High degree of freedom. In this case, if the two strips 21 and 22 constituting the strip substrate 2 are increased in thickness, the rigidity of the strip substrate 2 can be increased. It is possible to maintain the belt-like substrate 2 in a desired posture (enhance the shape stability of the belt-like substrate 2).

  In the above description, the illumination substrate 1 in which the plurality of strip-like substrates 2 are electrically and physically connected in substantially the same plane has been described. The illumination substrate 1 is configured by connecting the plurality of strip-like substrates 2 in a three-dimensional manner. You can also That is, the plurality of strip-like substrates 2 are formed in a generally rectangular illumination substrate 1 (see FIG. 8), a substantially cylindrical illumination substrate 1 (see FIG. 9), or a substantially spherical shape. The lighting substrate 1 (see FIG. 10) can be electrically and physically connected. In addition, in each embodiment shown in FIGS. 8-10, from a viewpoint of improving the shape stability of the board | substrate 1 for illumination, the strip | belt-shaped board | substrate 2 is electrically and physically used using the frame which has the function as the connector 11. FIG. Thus, the lighting substrate 1 having a three-dimensional shape as a whole is formed.

  Further, the individual strip-like substrates 2 constituting the illumination substrate 1 can be configured as shown in FIG. The strip-shaped substrate 2 shown in FIG. 11 is an example of the strip-shaped substrate 2 having an enhanced function for preventing a short circuit between the strip plates 21 and 22, and it is possible to form a lighting substrate 1 particularly suitable for outdoor use. To do. That is, in the strip-shaped substrate 2 shown in FIGS. 2 to 4 and the like, the outer edge portions of both the strip plates 21 and 22 are exposed without being covered with the resin portion 24, and the window portion 26 is opened on the back surface of the strip-shaped substrate 2. doing. On the other hand, in the belt-like substrate 2 shown in FIG. 11, the resin portion 24 further includes a portion that covers the outer edge portions of both the strip plates 21 and 22 and a portion that seals the opening on the back surface side of the window portion 26. . Further, the gap between the periphery of the LED chip 3 and the window portion 26 is covered with the sealing material 10. With the above configuration, it is possible to reliably prevent a short circuit between the strips 21 and 22 due to rainwater or foreign matter. Therefore, if the lighting substrate 1 is configured by connecting a plurality of such belt-like substrates 2, an illumination device having a structure suitable for outdoor use can be provided. In addition, as the sealing agent 10, what is excellent in adhesiveness with resin, a metal, etc. (For example, an acrylic adhesive, an epoxy-type adhesive agent, UV curable adhesive) can be used preferably.

  Further, as the connector 11, a connector as shown in FIGS. 12 (a) and 12 (b) can be used. This connector 11 is for electrically and physically connecting two strip-shaped substrates 2 and 2, and includes two fitting pieces 13 and 13 that can be fitted into the window portion 26 of the strip-shaped substrate 2, It has the connection line 14 which connects the fitting pieces 13 and 13 electrically and physically. Each fitting piece 13 has a pair of terminals electrically connected to the terminals (positive and negative terminals) 27 and 27 of the belt-like substrate 2 when the fitting pieces 13 are fitted into the window portion 26 of the belt-like base 2. (Not shown). The connection wire 14 is preferably one having high flexibility, and can be constituted by, for example, a coated conductor. Then, if the fitting pieces 13 and 13 of the connector 11 are fitted into the window portion 26 of the one strip-shaped substrate 2 and the window portion 26 of the other strip-shaped substrate 2, respectively, the two strip-shaped substrates 2 and 2 are angularly displaced. They can be connected electrically and physically. Therefore, if such a connector 11 is used for the connection of the strip substrate 2, the degree of freedom of deformation of the illumination substrate 1 can be further increased. Note that the connector 11 shown in this embodiment is one in which the two strips 2 and 2 are electrically and physically connected, so that the two fitting pieces 13 and 13 are connected by the connection line 14. However, it is also possible to electrically and physically connect three or more fitting pieces 13 via the connection line 14. Such a connector 11 can be used when three or more strip-like substrates 2 are electrically and physically interconnected.

  Although not shown, one or a plurality of connectors 11 (11A, 11B) used in the lighting substrate 1 shown in FIG. 1 and the connector 11 used in the lighting substrate 1 shown in FIG. It can also have a battery as a power source (with a built-in battery). As the battery, either a primary battery or a secondary battery can be used. In the case of using a secondary battery, a commercial power source or a solar battery is connected to the battery so that the battery can be charged. With such a configuration, the lighting substrate 1 can be used as it is as a lighting device, so that the degree of freedom of the installation location and usage method can be increased. For example, it can be used not only as a permanent lighting device such as a ceiling light but also as an emergency lighting device.

  Moreover, although the board | substrate 1 for illumination demonstrated above connected the some strip | belt-shaped board | substrate 2 via the connector 11 electrically and physically, the connection between the strip | belt-shaped boards 2 does not use the connector 11. FIG. It can also be done directly.

DESCRIPTION OF SYMBOLS 1 Board | substrate for illumination 2 Strip | belt-shaped board | substrate 3 LED chip 7 Injection molding machine 11 Connector 12 Terminal 13 Fitting piece 14 Connection line 21 Strip (positive electrode strip)
22 Strip (negative strip)
23 Terminal 24 Resin part 26 Window part 27 Terminal 31 Light emitting element 32 Terminal

Claims (7)

A belt-like substrate having a resin part formed by injection molding in which both positive and negative strips made of conductive metal and positive and negative strips are inserted, and holding both positive and negative strips in an insulated state;
A plurality of LEDs arranged apart from each other in the extending direction of the belt-shaped substrate, each electrically connected to both the positive and negative belt plates;
An illumination substrate configured by electrically and physically connecting a plurality of the strip-shaped substrates.   The lighting substrate according to claim 1, wherein the lighting substrate is configured by connecting a plurality of strip-shaped substrates in a plane.   The lighting substrate according to claim 1, wherein the lighting substrate is configured by three-dimensionally connecting a plurality of strip-shaped substrates.   The board | substrate for illumination as described in any one of Claims 1-3 which connected the some strip | belt-shaped board | substrate electrically and physically via the connector.   The illumination substrate according to claim 4, wherein the strip substrate is detachably connected to the connector.   The lighting substrate according to claim 4 or 5, wherein the connector includes a battery for supplying power to the plurality of LEDs.   The lighting substrate according to any one of claims 1 to 6, wherein a plurality of LEDs are connected in parallel to both positive and negative strips.

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