JP2014049192A - Strip-like substrate and led lighting device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED mounting substrate and an LED lighting device which has a low cost and high convenience based on the LED mounting substrate.SOLUTION: A strip-like substrate 2 includes: strip plates 21, 22 for cathode and anode made of conductive metal; and a resin part 24 which is formed according to injection molding while inserting both strip plates 21, 22 thereinto and integrally retains both strip plates 21, 22 in an insulating state. Therein, a plurality of window parts 26 are formed on the upper surface of the strip-like substrate 2 so as to be separated in such a direction that the strip-like substrate 2 is extended, respective LEDs 3 accommodated on the window parts 26 are electrically connected to the positive and negative strip plates 21, 22 and, when a bottom surface 29 of the strip-like substrate 2 is put on an attachment surface, the center line X of the bottom surface in such a direction that the strip-like substrate 2 is extended is formed so as to be curved in a substantially circular-arcuate shape on the attachment surface.

Description

  The present invention relates to a belt-like substrate and an LED lighting device using the same.

  An example of a substrate for mounting an LED is described in Patent Document 1. This substrate has a positive electrode and a negative electrode band plate made of a conductive metal, and a resin part that is injection-molded by inserting both band plates and holds both band plates in an insulated state. A plurality of light emitting diodes (LEDs) are mounted on one surface of the substrate apart from each other in the extending direction.

  This board is formed by insert molding resin on a metal strip to form an insulating part, and since the printed board is not used, the manufacturing process is simple and can be manufactured at low cost, and the continuous board in the reel winding state can be manufactured. It is excellent in terms of storage and transportation.

JP 2011-146187 A

  However, the substrate described in Patent Document 1 is only for providing an alternative to the existing fluorescent lamp. That is, the invention described in Patent Document 1 is the same size as an existing fluorescent lamp by cutting the 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. The LED type fluorescent lamp is intended to be manufactured. However, as a product that can meet new market demands in recent years, no studies have been made to further increase the added value.

  In view of the above problems, an object of the present invention is to provide a low-cost and highly convenient LED mounting board and LED lighting device based on the above-described type of LED mounting board.

  The inventors of the present invention have developed the above-mentioned type of substrate and have conceived a new product concept of an LED mounting substrate suitable for an easy-to-use round LED lighting device, and have arrived at the present invention.

  As a technical means for solving the above-described object, a strip-shaped substrate according to the present invention is formed by injection molding in which a strip for a positive electrode and a negative electrode made of a conductive metal, and both strips are inserted. A strip-shaped substrate having a resin portion that is integrally held in an insulated state, wherein a plurality of windows are formed on the upper surface of the strip-shaped substrate so as to be spaced apart from each other in the extending direction of the strip-shaped substrate. Each has a configuration that is electrically connected to both the positive and negative strips, and when the bottom surface of the strip substrate is placed on the mounting surface, the center line of the bottom surface in the direction in which the strip substrate extends extends substantially on the mounting surface. It is characterized by being curved in an arc shape.

  In addition to the advantage that the strip-shaped substrate according to the present invention does not use a printed circuit board, the manufacturing process is simple and can be manufactured at low cost, and the continuous substrate can be stored and transported in a reel winding state. It is suitable for a round LED lighting device that is easy to use. In addition, since complicated wiring work is not required, it is possible to simplify the work of attaching the belt-like substrate, and it is possible to attach it to the lighting device by the end user, and further, including the selection of the LED emission color, brightness, etc. It is also possible to realize an LED lighting device according to the user's preference.

  Specifically, the band plate is formed in a substantially L-shaped cross section, and the band plate is composed of a first plate part parallel to the bottom surface of the belt-like substrate and a second plate part perpendicular to the bottom surface. It is preferable to configure. By forming the second plate portion and making the first plate portion not continuous, the center line of the bottom surface in the extending direction of the belt-like substrate can be easily curved in a substantially arc shape.

  Moreover, the terminal which contacts the terminal of LED can be formed in a 2nd board part. As a result, the terminals can be formed with a simple configuration, and the mounting operation of the LED on the belt-like substrate is extremely easy, and it is electrically connected only by mounting, and the soldering operation of each terminal becomes unnecessary. .

  By forming a notch portion between the first plate portion and the adjacent window portion in the extending direction of the belt-like substrate, the center line of the bottom surface can be easily curved into a substantially arc shape.

  Said resin part can be continuously formed in the direction where a strip | belt-shaped board | substrate is extended. In this case, the curved state of the manufactured belt-like substrate can be kept constant, which is advantageous for the strength and handleability of the belt-like substrate.

  Contrary to the above, the resin portion can be divided and formed between adjacent window portions in the direction in which the belt-shaped substrate extends. In this case, the radius of curvature of the center line of the bottom surface of the manufactured belt-like substrate can be changed within an appropriate range, so that the degree of freedom of application of the belt-like substrate to round illuminators of different sizes can be increased. Can do.

  In order to make the above-described LED detachable, the locking convex portion can be formed integrally with the resin portion on the side surface of the window portion, or can be formed on the second surface of the band plate located on the window portion. As a result, the LED can be easily mounted or removed.

  According to the present invention, since the LED mounting board does not use a printed board, the manufacturing process is simple and can be manufactured at low cost, and the continuous board can be stored and transported in a reel winding state. In addition, it is suitable for a round LED lighting device that is easy to use. Further, since complicated wiring work is not required, the work of attaching the belt-like substrate can be simplified, and the end user can attach it to the lighting device. Furthermore, it is also possible to realize an LED lighting device according to personal preference including selection of the light emission color and luminous intensity of the LED.

It is a top view which shows the strip | belt-shaped board | substrate which concerns on the 1st Embodiment of this invention. It is a longitudinal cross-sectional view in the XX line in FIG. It is a cross-sectional view in the YY line in FIG. It is a perspective view which shows a LED chip. It is a perspective view of a strip | belt-shaped board | substrate. It is a perspective view of a strip | belt-shaped board | substrate. It is a schematic diagram explaining the manufacturing method of a strip | belt-shaped board | substrate. It is a top view explaining the LED illuminating device using a strip | belt-shaped board | substrate. It is a schematic diagram explaining the LED illuminating device using a strip | belt-shaped board | substrate. It is a top view which shows the strip | belt-shaped board | substrate which concerns on the 2nd Embodiment of this invention. It is a cross-sectional view in the YY line in FIG. It is a top view which shows the strip | belt-shaped board | substrate which concerns on the 3rd Embodiment of this invention. It is a top view which shows the state which corrected the curvature radius of said strip | belt-shaped board | substrate. It is a perspective view of a strip | belt-shaped board | substrate. It is a perspective view of a strip | belt-shaped board | substrate.

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

  A strip substrate according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the belt-like substrate 2 has a belt-like shape in which two belt plates 21 and 22 arranged in parallel are integrally held by a resin portion 24. When the bottom surface 29 of the belt-like substrate 2 (see FIGS. 2 and 3) is placed on the attachment surface, the center line X of the bottom surface 29 in the extending direction of the belt-like substrate 2 is formed to be curved in a substantially arc shape on the attachment surface. ing. The two strips 21 and 22 are each made of a conductive metal (eg, copper plate, aluminum plate, stainless steel plate) having a thickness of about 0.01 mm to 3 mm (for example, 0.1 mm) and having high flexibility. Terminals 23 for connection to a power source are formed at the ends of the two strips 21 and 22. 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 continuously covers 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. The terminal 23 of the band plate 21 is for the positive electrode and the terminal 23 of the band plate 22 is for the negative electrode. Conversely, the terminal 23 of the band plate 21 is for the negative electrode and the terminal 23 of the band plate 22 is the positive electrode. It can also be used. The resin portion 24 is formed by inserting the band plates 21 and 22 and performing injection molding as will be described later. The resin material can be arbitrarily selected according to the use conditions of the LED lighting device in which the belt-like substrate 2 is used. For example, LCP, PPS, POM, PEEK, or the like can be used.

  A plurality of window portions 26 are formed in the resin portion 24 as appropriate (equal pitch or unequal pitch) along the direction in which the strips 21 and 22 extend. In this embodiment, the windows 26 are formed at an equal pitch. The window portion 26 is between one of the two strips 21 and 22, one surface of the belt-like substrate 2 (the surface on the side where the LED chip 3 is mounted. (Referred to as “bottom surface”).

  The two strips 21 and 22 have a substantially L-shaped cross section as shown in FIG. FIG. 3 is an enlarged cross-sectional view taken along line YY in FIG. The strip plates 21 and 22 having a substantially L-shaped cross section include first plate portions 21 a and 22 a that are parallel to the bottom surface 29 of the strip substrate 2, and second plate portions 21 b and 22 b that are perpendicular to the bottom surface 29. It consists of. The second plate portions 21 b and 22 b are bent from the inner edges in the width direction of the first plate portions 21 a and 22 a and extend toward the bottom surface 29. A plurality (three in the figure) of terminals 21c and 22c are formed at the end of the second plate portions 21b and 22b on the bottom surface 29 side. The terminals 21c and 22c are bent from the second plate portions 21b and 22b, protrude into the window portion 26, and are in contact with the terminals 32 of the LED chip 3. The state in which each terminal 21c, 22c protrudes into the window part 26 is also referred to from the window part 26 not mounted with the LED chip 3 of FIG.

  As shown in FIG. 1, the first plate portions 21a and 22a parallel to the bottom surfaces 29 (see FIGS. 2 and 3) of the band plates 21 and 22 are cut at portions between the adjacent window portions 26 and 26, respectively. Notch portions 21d and 22d are provided. In the portions where the notches 21d and 22d are formed, only the second plate portions 21b and 22b perpendicular to the bottom surface 29 are formed on the strip plates 21 and 22, respectively. As shown in the drawing, since the longitudinal lengths of the window portions 26 of the radially outer strip 21 and the radially inner strip 22 are formed to be equal, the notch 21d is notched. The width in the longitudinal direction is larger than 22d. By forming the notches 21d and 22d in this way, the second plates 21b and 22b can be easily and easily curved in the cross-sectional direction (on the paper surface of FIG. 1).

  When the belt-like substrate 2 is placed on the mounting surface by bending or bending at the notch portions 21d and 22d, the center line X of the bottom surface 29 in the extending direction of the belt-like substrate 2 is curved in a substantially arc shape on the mounting surface. Can be formed. Specifically, the portion of the band plate 21 that forms the window portion 26 is linear, and the portions of the notches 21d and 22d are curved or bent so that the linear portions and the curved or bent portions are alternately connected. The belt-like substrate 2 is curved in a substantially arc shape (strictly close to a polygonal shape) as a whole. As described above, since the form of the center line X of the bottom surface in the extending direction of the belt-like substrate is a form in which straight portions and curved portions or bent portions are alternately connected, in the present specification and claims, The radius of curvature of the center line on the bottom surface means the radius of a circle inscribed in the center line X.

  FIG. 2 shows a longitudinal section along the center line X of the bottom surface of FIG. However, the LED chip 3 is not a cross section but a side surface. The left window portion 26 in this figure shows a state in which the LED chip 3 is attached, and the right window portion 26 shows a state in which the LED chip 3 will be attached. When the LED chip 3 is inserted into the window portion 26 in the direction of the arrow, the terminal 32 of the LED chip 3 is elastically deformed over the locking projection 26a formed on the side surface of the window portion 26, and the terminal 32 of the LED chip 3 Then, the terminals 21c and 22c projecting into the window portion 26 are contacted, and then the upper end 32a (see FIG. 4) of the terminal 32 of the LED chip 3 is engaged with the locking convex portion 26a to be prevented from coming off (see FIG. 3). As described above, the mounting operation of the LED chip 3 on the belt-like substrate 2 is extremely easy and is electrically connected only by mounting. Therefore, the soldering work of the terminals 32, 21c, and 22c is not necessary. Further, it is possible to remove the LED chip 3 from the belt-like substrate 2 by elastically deforming the locking convex portion 26 a of the window portion 26. The upper surface 28 and the bottom surface 29 of the belt-like substrate 2 are flat surfaces, and the thickness of the belt-like substrate 2 is about 3 to 5 mm.

  As the LED chip 3, a so-called surface mount type (or chip type) as shown in FIG. 4 is used. The configuration and form of the LED chip 3 is arbitrary, and FIG. 4 illustrates the LED chip 3 that is a multichip having a plurality of (three in the illustrated example) light emitting elements 31 and packaged in a thin rectangular parallelepiped shape. doing. In addition to the multichip, a single chip can also be used. In addition to the chip type, a shell type can be used. The LED chip 3 has a pair or a plurality of pairs of terminals 32 corresponding to the number of light emitting elements 31. The terminal 32 has an L-shaped cross section, protrudes from the central portion of the LED chip 3 to the outside, extends along the side surface and the bottom surface, and has the terminal 32 on the outer periphery of the chip.

  In FIG. 1, the LED chips 3 are not fitted in some of the window portions 26, but this is to clarify the configuration of the belt-like substrate 2 by clearly showing the terminals 21 c and 22 c and the locking projections 26 a on the drawing. Of course, the LED chip 3 may be used by being fitted to all the window portions 26, or may be used without being fitted to some windows as shown in FIG. In the present embodiment, the two strips 21 and 22 and the LED chip 3 are connected in parallel. However, the circuit is changed by changing the shape of the strip and the LED chips 3 are connected in series. You can also. Thus, since the two strips 21 and 22 and the LED chip 3 are connected, a printed circuit board is unnecessary.

  5 and 6 are perspective views of the belt-like substrate 2. FIG. 5 is a view of the belt-like substrate 2 as viewed from the top surface side, and FIG. 6 is a view of the belt-like substrate 2 as viewed from the bottom surface side. 5 and 6, the terminal 32 of the LED chip 3 contacts the terminals 21c and 22c protruding into the window portion 26, and the upper end 32a (see FIG. 4) of the terminal 32 of the LED chip 3 is the locking convex portion 26a. It can be understood well that the window is engaged in the window portion 26. From FIG. 6, it can be well understood that the center line X of the bottom surface 29 in the extending direction of the belt-like substrate 2 is formed to be curved in a substantially arc shape on the mounting surface.

  The belt-like substrate 2 described above can be manufactured by the following procedure. First, the unfolded end edges of the notches 21d and 22d, the terminals 21c and 22c, and the second plates 21b and 22b following this are punched out from two wide strips by press working. Thereafter, or simultaneously, the second plate portions 21b and 22b are bent at a right angle with respect to the first plate portions 21a and 22a, and the terminals 21c and 22c are bent with respect to the second plate portions 21b and 22b. Thereafter, the portions of the notches 21d and 22d are curved. Since the notches 21d and 22d are formed, the second plates 21b and 22b can be easily and easily curved in the cross-sectional direction. The strips 21 and 22 are manufactured through such a series of steps. The strips 21 and 22 manufactured in this way are shown in FIG. This process is an example, and can be changed or added as appropriate.

  As shown in FIG. 7, 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 portion 24 is injected by injecting the resin into the mold. Form. Thereby, the belt-like substrate 2 in which the two belt plates 21 and 22 are integrally held by the resin portion 24 and the two belt plates 21 and 22 are insulated by the resin portion 24 is obtained. The punching or plastic deformation of the strips 21 and 22 can be performed before feeding into the injection molding machine 7 or in the injection molding machine.

  The LED chip 3 is mounted on the window portion 26 of the belt-like substrate 2 carried out from the injection molding machine 7. The substrate 2 on which the LED chip 3 is mounted is sequentially wound up into a roll shape and transferred to a post-processing step. Only the substrate may be transferred to a post-processing step so that the LED chip can be freely inserted by the end user without being inserted at this stage. In the post-processing step, the substrate 2 is pulled out of the roll and cut into a predetermined size, and one end of the resin portion 24 is removed to expose the terminal 23, and the terminal 23 is punched into a final shape (see FIG. 1). If the length of use is known in advance, the resin molding of the terminal 23 portion is not performed, and the terminal 23 can be left exposed, or can be cut immediately without being rolled up after molding. It is also possible. The end user or the like can also remove or attach the LED chip 3.

  In FIG. 7, the configuration in which the two strips 21 and 22 in a separated state are supplied to the injection molding machine 7 is illustrated, but one strip is fed forward and cut and bent immediately before the injection molding machine 7. These can be processed and supplied to the injection molding machine 7.

  Next, the LED lighting apparatus 1 using the strip | belt-shaped board | substrate 2 of this embodiment is demonstrated based on FIG. 8 and FIG. The above-described belt-like substrate 2 is cut with a predetermined dimension so that both ends thereof are connected in a circle, one end of the resin portion 24 is removed to expose the terminal 23, and the terminal 23 is punched into a final shape (see FIG. 1). The terminal 23 of the strip | belt-shaped board | substrate 2 of the state is connected to the terminal of the connector 11 of an illuminating device, as shown in FIG. As illustrated, a number of LED chips 3 are mounted on the belt-like substrate 2.

  FIG. 9 shows an example of the LED lighting device. The LED lighting device 1 is a general household one and is connected to a connector 41 installed on the ceiling 40. The lighting unit main body 44 is suspended from the connector 42 of the lighting device 1 via the cable 43. The illumination unit main body 44 includes a connection base 47, an LED lighting circuit unit 45, a mounting plate 46 for the belt-like substrate 2, a cover 48, and the like. Although not shown, the LED lighting circuit unit 45 includes a resistor, an electrolytic capacitor, a transformer, and the like, rectifies and smoothes an alternating current that is an external power supply, converts the alternating current into a predetermined direct current, and passes through the connector 11 to form a belt-like substrate. A low current is supplied to the LED chip 3 attached to 2. In this embodiment, a set of the LED lighting circuit portion 45 and the mounting plate 46 of the belt-like substrate 2 is configured to be locked to the connection base portion 47.

  In the LED lighting device 1 shown in FIG. 9, the belt-like substrate 2 is attached to the attachment plate 46 by an appropriate number (for example, three places) of hooks 49. Here, the lower surface of the mounting plate 46 means the mounting surface in the present specification and claims. In the present embodiment, an example in which the mounting surface is a plane is shown, but the present invention is not limited to this, and the mounting surface may be a conical convex inclined mounting surface, a conical concave inclined mounting surface, or a curved mounting surface. . Further, in the LED lighting device 1 described above, the attachment example using the hook 49 has been shown. However, the present invention is not limited to this. You can also. The band-shaped substrate 2 is suitable for a round LED lighting device that is easy to use because the center line X of the bottom surface 29 in the extending direction is formed in a substantially arc shape on the mounting surface. In addition, since complicated wiring work is not required, the work of attaching the strip-like substrate 2 can be simplified, and the end user can attach it to the lighting device 1. In addition, since the electrode for the LED chip 3 that is lit at about several volts has a low voltage, there is no particular problem in terms of safety.

  If the LED chips 3 are connected in parallel as in the present embodiment, even if the strip-shaped substrate 2 is cut at an appropriate position in the length direction after the strip-shaped substrate 2 is cut, no disconnection occurs and each LED can be turned on. Therefore, it is also possible to adopt a sales mode in which the strip-like substrate 2 is sold and sold at a retail store.

  In the LED lighting device 1 described above, an example in which one row of strip-like substrates 2 is attached is shown. However, in order to increase the brightness, two or more rows of strip-like substrates 2 can be attached. Further, although an example of an open type fluorescent lamp type is shown in FIG. 9, it goes without saying that it can also be applied to a round ceiling lamp or the like. Furthermore, it is also possible to realize an LED lighting device according to personal preference including selection of the light emission color and luminous intensity of the LED.

  Next, a belt-like substrate according to a second embodiment of the present invention is shown in FIGS. 10 is a plan view seen from the upper surface side of the belt-like substrate, and FIG. 11 is a cross-sectional view taken along the line YY of FIG. In this embodiment, the structure of the latching convex part which prevents the LED chip 3 attached to the window part 26 of the resin part 24 of the belt-like substrate 2 from being different is different from that of the first embodiment. Since other configurations are the same as those of the first embodiment, portions having the same functions are denoted by the same reference numerals, and redundant description is omitted.

  Similar to the first embodiment, the strip plates 21 and 22 have a substantially L-shaped cross section, and the strip plates 21 and 22 are first plate portions 21 a and 22 a that are parallel to the bottom surface 29 of the strip substrate 2. And second plate portions 21 b and 22 b perpendicular to the bottom surface 29. The second plate portions 21 b and 22 b are bent from the inner edges in the width direction of the first plate portions 21 a and 22 a and extend toward the bottom surface 29. A plurality (three in the figure) of terminals 21c and 22c are formed at the end of the second plate portions 21b and 22b on the bottom surface 29 side. The terminals 21c and 22c are bent from the second plate portions 21b and 22b and are in contact with the terminals 32 of the LED chip 3.

In the first embodiment, the locking convex portion 26a for preventing the LED chip 3 attached to the window portion 26 from being detached is formed on the side surface of the window portion 26 by injection molding, but in this embodiment, The locking projections 21e and 22e are formed on the second plate portions 21b and 22b of the band plates 21 and 22 by pressing. A configuration in which the LED chip 3 is attached to and detached from the band-like substrate 2 in the first embodiment, and the center line X of the bottom surface 29 in the extending direction of the band-like substrate 2 is formed to be curved in a substantially arc shape on the mounting surface. The manufacturing method of the strip-shaped substrate 2, the processing of the terminal 23 for removing one end of the resin portion 24, the configuration of the LED lighting device using the strip-shaped substrate 2, and the like are the same as those in the first embodiment, and thus redundant description is omitted. To do.

  A third embodiment of the present invention is shown in FIGS. The belt-like substrate 2 of this embodiment is substantially the same as that of the second embodiment with respect to the belt plates 21 and 22, but the configuration of the resin portion 24 is different from that of the second embodiment. Parts having the same functions as those of the second embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The belt-like substrate 2 of the present embodiment is one in which the curvature radius of the center line X of the bottom surface 29 in the extending direction of the belt-like substrate 2 can be corrected after the two belt plates 21 and 22 are inserted and injection-molded. . Specifically, as shown in FIG. 12, the resin portion 24 that forms the window portion 26 of the belt-like substrate 2 is a rectangular block, and between the adjacent window portions 26 in the extending direction of the belt-like substrate 2. It is divided and formed. Therefore, the second plate portions 21 b and 22 b of the strip plates 21 and 22 are exposed between the resin portions 24 that form the adjacent window portions 26. Further, in order to increase the exposed length of the plate portions 21b and 22b, the width in the longitudinal direction of the notches 21d and 22d provided in the first plate portions 21a and 22a of the strip plates 21 and 22 is set in the second embodiment. It is slightly larger than that of the form. Thereby, the correction amount of the curvature radius of the center line X of the bottom surface 29 is ensured.

  FIG. 12 shows a state before the curvature radius of the center line A of the bottom surface 29 is corrected. When the strip substrate 2 is placed on the mounting surface by curving the plate portions 21b and 22b at the notch portions 21d and 22d, the center line A of the bottom surface 29 in the extending direction of the strip substrate 2 is predetermined on the mounting surface. It is formed to be curved in a substantially arc shape. That is, the portion of the band plate 21 that forms the window portion 26 is linear, and the portions of the notches 21d and 22d are curved, so that the linear portion and the curved portion are alternately connected to each other. 2 is curved in a substantially arc shape as a whole.

  FIG. 13 shows a state in which the radius of curvature of the belt-like substrate 2 is corrected from the state shown in FIG. The illustrated one is corrected to the side where the radius of curvature of the center line X of the bottom surface 29 is increased. As shown in the drawing, the second plate portion 21b of the strip plate 21 on the radially outer side is deformed so as to contract, and the radius of curvature of the center line X of the bottom surface 29 is increased by a predetermined dimension according to the amount of deformation. As described above, the radius of curvature of the center line of the bottom surface of the manufactured belt-like substrate can be changed within an appropriate range, so that the degree of freedom of application of the belt-like substrate to round illuminators of different sizes can be increased. it can.

  14 and 15 are perspective views of the belt-like substrate 2. FIG. 14 is a view of the belt-like substrate 2 as viewed from the top surface side, and FIG. 15 is a view of the belt-like substrate 2 as viewed from the bottom surface side. 14 and 15, the terminal 32 of the LED chip 3 contacts the terminals 21 c and 22 c protruding into the window portion 26, and the upper end 32 a ( It can be understood well that the state shown in FIG. 4 is engaged with the locking projections 21e and 22e and is mounted in the window portion 26. Further, from FIG. 15, it can be well understood that the center line X of the bottom surface 29 in the extending direction of the belt-like substrate 2 is formed to be curved in a substantially arc shape on the mounting surface.

  In the present embodiment, the locking projections 21e and 22e for preventing the LED chip 3 attached to the window 26 from being detached are formed on the second plate portions 21b and 22b of the band plates 21 and 22 by press working. Although an example is shown, it is also possible to injection-mold the locking convex part on the side surface of the window part 26 as in the first embodiment.

  The belt-like substrate of this embodiment is also attached to the belt-like substrate 2 of the LED chip 3 described in the first embodiment, and the center line X of the bottom surface 29 in the extending direction of the belt-like substrate 2 is curved in a substantially arc shape on the attachment surface. The structure formed in this way, the manufacturing method of the strip-shaped substrate 2, the processing of the terminal 23 for removing one end of the resin portion 24, the configuration of the LED lighting device using the strip-shaped substrate 2, and the like are the same as those in the first embodiment. Since it is the same, redundant description is omitted.

  The present invention is not limited to the above-described embodiments, and can of course be implemented in various forms without departing from the scope of the present invention. The scope of the present invention is not limited to patents. It includes the equivalent meanings recited in the claims and the equivalents recited in the claims, and all modifications within the scope.

DESCRIPTION OF SYMBOLS 1 LED illuminating device 2 Strip | belt-shaped board | substrate 3 LED chip 7 Injection molding machine 11 Connector 21 Positive side strip 21a 1st board part 21b 2nd board part 21c Terminal 21d Notch part 21e Locking convex part 22 Negative side strip 22a 1st Plate portion 22b Second plate portion 22c Terminal 22d Notch portion 22e Locking convex portion 23 Terminal 24 Resin portion 26 Window portion 27 Terminal 28 Top surface 29 Bottom surface 32 Terminal 46 Mounting plate X Bottom center line

An example of a substrate for mounting an LED is described in Patent Document 1. The substrate strip for the positive electrode and the negative electrode made of a conductive metal, is molded out morphism as well, it has a resin portion for holding together the two strips in an isolated state. A plurality of light emitting diodes (LEDs) are mounted on one surface of the substrate apart from each other in the extending direction.

Claims (9)

A belt-like substrate made of conductive metal for positive and negative electrodes, and formed by injection molding in which both belt plates are inserted, and having a resin portion that integrally holds both belt plates in an insulating state,
A plurality of window portions are formed on the upper surface of the belt-like substrate so as to be spaced apart from each other in the extending direction of the belt-like substrate, and each of the LEDs accommodated in the window portion is electrically connected to both the positive and negative belt plates. Have
A band-shaped substrate, wherein when the bottom surface of the band-shaped substrate is placed on the mounting surface, a center line of the bottom surface in the extending direction of the band-shaped substrate is curved in a substantially arc shape on the mounting surface.   The band plate has a substantially L-shaped cross section, and includes a first plate portion parallel to the bottom surface of the band-shaped substrate and a second plate portion perpendicular to the bottom surface. Item 2. A belt-like substrate according to Item 1.   The strip-shaped substrate according to claim 1, wherein the first plate portion has a notch formed between adjacent window portions in the extending direction of the strip-shaped substrate.   The said resin part is continuously formed in the direction where a strip | belt-shaped board | substrate is extended, The strip | belt-shaped board | substrate as described in any one of Claims 1-3 characterized by the above-mentioned.   The resin portion is formed by being divided between adjacent window portions in a direction in which the belt-shaped substrate extends, and the radius of curvature of the center line of the bottom surface of the belt-shaped substrate can be corrected. The strip-shaped substrate according to any one of 3.   The band-shaped substrate according to claim 1, wherein a terminal that contacts an LED terminal is formed on the first plate portion of the band plate.   The belt-like substrate according to any one of claims 1 to 6, wherein a locking convex portion that allows the LED to be attached and detached is formed integrally with a resin portion on a side surface of the window portion.   The belt-like substrate according to any one of claims 1 to 6, wherein a locking convex portion that allows the LED to be attached and detached is formed on a first surface of the belt plate that is located in the window portion.   The LED illuminating device using the strip | belt-shaped board | substrate of Claims 1-8.

Images