JP6134475B2 - Light emitting module and light emitting module connector - Google Patents

Description

  The present invention relates to a light emitting module configured by mounting a light emitter on an outer peripheral surface of a substrate made of a polyhedron and a light emitting module coupling body.

  2. Description of the Related Art Conventionally, a light emitting module configured to obtain a wide range of light emission with high luminance by mounting a plurality of light emitters on a substrate is known. Such a light emitting module includes a flat substrate on which a plurality of pairs of electrode patterns are formed and a plurality of light emitting diodes (LEDs) having a PN junction structure. Since the planar mounting space of the substrate is limited, in order to mount a large number of LEDs, it is necessary to arrange them at high density with a small interval.

  According to the light emitting module having the above configuration, although a planar light emitting effect can be obtained, it is not suitable as a light source for illuminating a three-dimensional space like a light bulb. For this reason, in order to obtain three-dimensional light emission, an illuminating device configured by mounting LEDs on each surface of a polyhedral base body on which an electrode pattern is formed is disclosed (Patent Document 1).

  In addition, since the electrode pattern on which the LED is mounted is composed of two electrode surfaces including an anode and a cathode, a substrate having a structure in which a pair of metal materials are sandwiched between insulating members such as an adhesive may be used. . For example, in the light emitting diode disclosed in Patent Document 2, a pair of columnar electrode bodies are bonded together with an insulating material interposed therebetween, and an LED is mounted on the bonded upper surface, and each electrode body and bonding wire are electrically connected. It is formed in connection with. In this light emitting diode, in order to reduce the size of the plane on which the LED is mounted, the upper surface of the pair of electrode bodies bonded together is configured as a light emitting surface.

JP 2008-004415 A JP 2002-289924 A

  In the lighting device disclosed in Patent Document 1, a base body having a plurality of mounting surfaces facing a predetermined light emitting direction is formed, and an electrode pattern is formed on the surface of the base body by etching or the like. There is a need. For this reason, an electrode pattern can be formed so as to be suitable for the LED mounting form, but there is a problem in that the number of manufacturing steps and costs increase because a step of forming a base body and a step of forming an electrode pattern are required. It was.

  On the other hand, in the light emitting diode disclosed in Patent Document 2, since the upper surface where the pair of electrode bodies are bonded together is a light emitting surface, it cannot be said that the light emitting range is narrow and the reflection effect is not sufficient. In order to widen the light emitting surface, the electrode body itself must be formed in a large size, and there is a problem that manufacturing and product costs increase. Moreover, since the surface which mounts LED is one place, it is not the structure which arrange | positions several LED in three dimensions.

  Therefore, an object of the present invention is to illuminate the space facing each mounting surface with uniform brightness by using a substrate having a mounting surface composed of a pair of electrode surfaces on which a light emitter is mounted in multiple directions. It is also possible to provide a light emitting module and a light emitting module connector that can flexibly expand the light emitting region in a line shape by allowing the substrates to be connected.

In order to solve the above problems, a light emitting module of the present invention has a regular polygonal cross section having a pair of electrode members on which a pair of metal members having a regular polygonal cross section is formed with an insulating layer interposed therebetween. A plurality of mounting surfaces each having the same shape; and a substrate having a pair of connecting surfaces at both ends of each mounting surface, each mounting surface having a pair of the light emitters on a pair of electrode surfaces sandwiching the insulating layer Terminal electrodes are electrically connected, and the pair of connecting surfaces are formed integrally with the pair of metal members, and are electrically connected to one electrode surface of each mounting surface, and the other electrode surface a connecting means comprising a recess leading to electrical, and wherein the peaks and valleys are made form by the regular polygon having a number of corners have multi than the number of the combined mounting surfaces To do.

Moreover, the light emitting module coupling body of the present invention includes a plurality of identical polygonal cross-sectional shapes having a pair of electrode surfaces on which a pair of metal members having a regular polygonal cross-section are formed with an insulating layer interposed therebetween and a light-emitting body is mounted. Each mounting surface and a substrate having a pair of connecting surfaces at both ends of each mounting surface, and each mounting surface has a pair of terminal electrodes of the light emitter on a pair of electrode surfaces sandwiching the insulating layer. The pair of connecting surfaces are electrically connected, and are formed integrally with the pair of metal members, electrically connected to one electrode surface of each mounting surface, and electrically connected to the other electrode surface. a connecting means comprising a recess, formed by the light emitting modules made form by the regular polygon having a number of corners have multi than the number which the protrusions and recesses were combined mounting surfaces plurality ligated emission a module coupling member, the light emitting the peaks and valleys is one The convex portion of the Joule and said recess of the other light-emitting module is formed in the fitting can be polygonal shapes, by changing the fitting positions of the respective convex and concave portions of one light emitting module and the other light emitting modules A plurality of light emitting modules can be connected at a predetermined angle.

  According to the light emitting module of the present invention, the light emitting body is mounted on each mounting surface of the substrate made of a polyhedron having adjacent mounting surfaces having a predetermined angle. Can be illuminated at the same time. In addition, since the pair of opposing surfaces of the polyhedron excluding the mounting surface of the substrate is a connection surface having a connection means, the light emitting modules can be arbitrarily connected through this connection surface. Thus, the light emitting area can be flexibly expanded in a line shape.

  Further, by providing a connecting means including a convex portion and a concave portion on the connecting surface, positioning when combining the light emitting modules is facilitated, and electrical connection can be reliably performed.

  Further, the substrate constituting the light emitting module is formed by using a block-shaped metal body having an insulating layer in the middle portion of the mounting surface, so that heat dissipation is improved. The calorific value of the body can be suppressed.

  According to the light emitting module coupling body according to the present invention, since the form and the number of coupling of the light emitting modules can be arbitrarily changed, it is possible to adopt a configuration according to the illumination range and the illumination application.

It is a perspective view of the light emitting module of 1st Embodiment. It is sectional drawing seen from the end surface direction of the said light emitting module. It is a perspective view of the board | substrate which comprises the said light emitting module. It is a side view of the light emitting module coupling body which connected the said light emitting module in multiple numbers. It is the side view which comprised the said light emitting module with the light emitting element of PN structure. It is the side view which comprised the said light emitting module with the light emitting device. It is a perspective view of the light emitting module of 2nd Embodiment. It is a side view of the said light emitting module. It is a side view of the light emitting module coupling body which connected the said light emitting module in multiple numbers. It is the side view seen from the end surface direction of the light emission module coupling body comprised by shifting the connection angle of the said several light emitting module mutually. It is sectional drawing when the light emitting module comprised using the board | substrate which consists of various polyhedral shapes is seen from an end surface direction. It is a perspective view which shows an example of the light-emitting lamp which mounts the said light emitting module coupling body.

  Hereinafter, embodiments of a light emitting module according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 6 show the structure of the light emitting module 11 according to the first embodiment of the present invention. The light emitting module 11 includes a polyhedral substrate 12 and a plurality of light emitters 13 mounted on the outer peripheral surface of the substrate 12.

  As shown in FIG. 3, the substrate 12 is formed in a hexahedron shape by a pair of block-shaped metal members 15 and 16 formed with an insulating layer 14 interposed therebetween. The insulating layer 14 is a layer made of an adhesive having an insulating property, and the pair of metal members 15 and 16 are electrically separated by this layer. The pair of metal members 15 and 16 are made of a copper material having excellent conductivity and are formed in a horizontally long rectangular column shape having a square cross section. As described above, since the substantially entire substrate 12 is constituted by the block-shaped metal members 15 and 16 having a wide exposed portion to the outside, as described later, when the light emitter 13 is mounted, the thermal conductivity is high. It becomes a good radiator (heat sink).

  As shown in FIGS. 1 to 3, the substrate 12 having the above configuration has planar mounting surfaces 17 a to 17 d formed by metal members 15 and 16 facing each other across the insulating layer 14 in four directions. Each mounting surface is adjacent to each other at a right angle. Each of the mounting surfaces 17a to 17d is composed of a pair of electrode surfaces 15a and 16a facing each other with the insulating layer 14 traversing the center portion therebetween. Both end surfaces of the substrate 12 orthogonal to the mounting surfaces 17a to 17d are connection surfaces 18a and 18b for connecting a plurality of light emitting modules 11, as shown in FIG. FIG. 4 shows one light-emitting module connector 10 that can be attached to and replaced with a general lighting device or lighting fixture by connecting five light-emitting modules 11 having the same configuration. In this way, by connecting the connecting surfaces 18a and 18b of the light emitting modules 11a to 11e with an adhesive or the like, a light source having a long concentric light emitting region can be obtained. In the light emitting module connector 10 having the above-described configuration, the light emitters 13 mounted on the pair of electrode surfaces 15a and 16a on each mounting surface are connected in series with respect to the connected direction and are located at both ends. By applying a predetermined power supply voltage between the open connection surface 18a and the other connection surface 18b of the light emitting modules 11a and 11e, the light emitters mounted on all the mounting surfaces emit light. As described above, since a plurality of light emitting modules can be flexibly combined through the pair of connecting surfaces 18a and 18b, it is easy to increase or decrease the light emitting modules according to the set luminance or the range to be illuminated, and to be mounted. It can be set as the structure suitable for the illuminating device, lighting fixture, etc. to perform. In addition, even if it is a single light emitting module without taking the said connection structure, the light emission effect of the minimum structure can be acquired by applying a power supply voltage directly to a pair of connection surface 18a, 18b.

  The substrate 12 is formed by bonding a pair of metal members 15 and 16 with an insulating layer 14 made of an adhesive, but can also be formed via a thin insulating plate made of a resin material. As another method for forming the substrate 12, a polyhedral base body is formed of resin, and an insulating region in which the resin surface is exposed in a strip shape is provided at the center of each outer peripheral surface serving as the mounting surface. Alternatively, the entire surface can be formed by plating with a highly conductive metal.

  Each of the light emitters 13 is provided with a pair of electrode portions on the lower surface side, and the pair of electrode portions and the pair of electrode surfaces 15 a and 16 a of the substrate 12 are electrically connected. At this time, since one of the pair of metal members 15 and 16 constituting the substrate 12 is the anode side and the other is the cathode side, a predetermined voltage is applied between the both end faces 18a and 18b of the substrate 12. The light emitters 13 mounted on the mounting surfaces emit light in parallel connection.

  The light-emitting body 13 is formed by sealing a light-emitting element 21 having a PN junction structure as shown in FIG. 5 or the light-emitting element 21 as shown in FIG. 6 on a chip substrate 23 with a translucent resin body 25. A light emitting device (LED) 22 can be used. As the light emitting element 21, for example, a gallium nitride compound semiconductor, an aluminum gallium arsenide, or a gallium arsenide phosphorus semiconductor is used. These semiconductors consist of a substrate made of sapphire glass and a diffusion layer (P layer and N layer) obtained by diffusing and growing a P-type semiconductor and an N-type semiconductor on the substrate. Each of the P-type semiconductor and the N-type semiconductor includes a P-type electrode and an N-type electrode, and the exposed portions of the P-type electrode and the N-type electrode serve as a pair of element electrodes 21a and 21b.

  When the light emitting element 21 is directly mounted on the mounting surfaces 17a to 17d, the element electrodes 21a and 21b are positioned and placed so as to correspond to the pair of electrode surfaces 15a and 16a, as shown in FIG. Is done. Then, the bump-shaped solder 20 is placed between the pair of electrode surfaces 15a and 16a and the element electrodes 21a and 21b, and the entire light emitting module 11 is subjected to a reflow process to achieve electrical connection. Further, the color of the luminescent color can be adjusted by covering the upper surface of the light emitting element 21 with a fluorescent plate or sheet.

  On the other hand, as shown in FIG. 6, the light emitter 13 includes a chip substrate 23 having a pair of chip electrodes 24a and 24b at both ends, a light emitting element 21 mounted on the chip substrate 23, and the light emitting element 21. When configured as a surface mount type LED 22 composed of a resin body 25 to be sealed, after a pair of chip electrodes 24a and 24b are placed on the pair of electrode surfaces 15a and 16a in correspondence with each other, the solder 20 Alternatively, they are electrically connected via a conductive adhesive or the like. In the present embodiment, the light emitting element 21 and the pair of chip electrodes 24a and 24b are connected by wires. However, the LED may be a surface-mounted LED via solder bumps, and each mounting surface of the substrate 12 Any light emitter that can be electrically connected to the pair of electrode surfaces 15a and 16a formed on 17a to 17d may be used. Further, the hue of the luminescent color can be adjusted by including a fluorescent agent in the resin body 25.

  Since the mounting space is different between the case where the light emitter 13 is the light emitting element 21 and the case of the LED 22, the size of the substrate 12 and the size of the pair of electrode surfaces 15a and 16a provided on each mounting surface are specified according to each aspect. Is done. Although one light emitter 13 is arranged on each mounting surface, a plurality of light emitters 13 including a plurality of light emitting elements 21 and LEDs 22 can be arranged in parallel on the same mounting surface.

  Further, the light emitter 13 can be connected in parallel or in series using two or more light emitting elements 21 to further increase the amount of light emission. As described above, various types of light emitting modules corresponding to power consumption and brightness can be obtained by appropriately selecting LEDs having different numbers of arrayed light emitting elements and different connection forms.

  According to the light emitting module 11 of the present embodiment, as shown in FIGS. 1 and 2, the light emitting body 13 mounted on the mounting surfaces 17 a to 17 d facing the four directions of the substrate 12 respectively causes the upper and left and right directions. A spatial region extending about 180 degrees centering on can be set as the irradiation range. In addition, if the pair of connection surfaces 18a and 18b are subjected to high light reflectance nickel plating, silver plating, or the like, even when a plurality of light emitting modules are connected, the brightness of the spatial region facing both ends is also improved. Can be secured.

  7 and 8 show the light emitting module 31 of the second embodiment. The light emitting module 31 includes a hexahedral substrate 32 formed of a pair of block-shaped metal members 35 and 36 formed with an insulating layer 34 interposed therebetween, and connection means provided on the pair of connection surfaces 38 a and 38 b of the substrate 32. And the light emitters 13 mounted on the mounting surfaces 37a to 37d. As shown in FIG. 8, the connecting means is provided at the center of each connecting surface 38a, 38b, one of which is a quadrangular convex portion 33a and the other is a quadrangular concave portion 33b. The connection surfaces 38a and 38b of the light emitting modules are connected to each other by engaging the portion 33a and the recess 33b. For this reason, as shown in FIG. 9, the convex part 33a of the other light emitting module 31b is fitted in the concave part 33b of one light emitting module 31a and joined via an adhesive or the like, so that no positional deviation occurs. The light emitting module coupling body 30 in which the plurality of light emitting modules 31a to 31e are linearly connected can be configured. In the light emitting module connector 30, the connecting surface 38a of the light emitting module 31a and the connecting surface 38b of the light emitting module 31e serve as terminal electrodes for supplying a power supply voltage from the outside.

  The connecting means composed of the convex portion 33a and the concave portion 33b may be any shape that can be engaged with each other, and may be a polygonal shape that is equal to or greater than a triangular shape, a star shape, a cross shape, or the like. In the case of the quadrangular shape, as shown in FIG. 9, the mounting surfaces of the plurality of light emitting modules 31 a to 31 e can be continued in a planar shape regardless of the orientation in which they are connected. Further, by making the combination shape of the connecting means into a triangular shape or a pentagonal shape or more, the mounting surfaces of the light emitting modules to be connected can be arranged concentrically while being shifted by a predetermined angle.

  In FIG. 10, the convex portions 33a and the concave portions 33b constituting the connecting means have a regular hexagonal shape, and the three light emitting modules 41 to 43 are rotated at an angle α (60 degrees) with the convex portions 33a and the concave portions 33b as rotational engagement shafts. The example of a structure of the light emission module coupling body 40 connected in the position rotated by (1) is shown. When the light emitting module 41 located in the front in the drawing is used as a reference, the convex portion 33a on the front surface side of the light emitting module 42 is engaged with the concave portion 33b on the rear surface side of the light emitting module 41 at a position rotated by an angle α. Further, the light emitting module 43 connected after the light emitting module 42 is engaged at a position rotated by an angle α with respect to the light emitting module 42. As a result, the light emitting module connector 40 has the light emitter 13 in the direction of the angle β (30 degrees).

  The light emitting module connection body 40 has three light emitting modules 41 to 43. By increasing the number of light emitting modules to be connected, a line-shaped light emitting module having a mounting surface inclined at a finer angle can be obtained. Can be configured. By adopting such a connection form, the light emitters mounted on each mounting surface are arranged in a state of being shifted by a predetermined angle without overlapping in the same plane. The entire space can be illuminated evenly. The inclination angle of the mounting surface in the adjacent light emitting module can be set finer as the number of corners increases, such that the shape of the connecting means is hexagonal rather than pentagonal, and octagonal rather than hexagonal.

  In the first and second embodiments, the case where the predetermined angle of the adjacent mounting surfaces of the substrates 12 and 32 is 90 degrees has been described. However, in the light emitting module of the present invention, the polyhedral shape of the substrate has various shapes other than the hexahedron. Therefore, it can be configured based on a substrate having a predetermined angle other than 90 degrees accordingly. These cases will be described below. 11A to 11D are various modifications of the light emitting module of the present invention, and show cross-sectional shapes along the respective mounting surfaces. Hereinafter, in each embodiment, the plurality of light emitters 13 and the external substrate 19 are assumed to be common, and the mounting surface of each substrate will be referred to as A, B, C. FIG. 11A is an example of the light emitting module 51 of the third embodiment configured by a substrate 52 having a triangular cross section. According to this embodiment, three mounting surfaces A to C can be obtained. Since the cross section of the substrate 52 has an equilateral triangle shape, each of the light emitters 13 mounted on the mounting surfaces A to C can irradiate a range of about 120 degrees. The angle α1 formed by the mounting surfaces A to C at this time is 60 degrees. FIG. 11B is an example of the light emitting module 61 of the fourth embodiment configured by a substrate 62 having a pentagonal cross section. According to this embodiment, the mounting surfaces A to E having a pentagonal configuration can be obtained. Since the substrate 62 has a shape close to a regular pentagon, it can irradiate substantially all directions equally. The angle α2 formed by the mounting surfaces A to E at this time is 108 degrees. FIG. 11C is an example of the light emitting module 71 of the fifth embodiment configured by the substrate 72 having a hexagonal cross section. According to this embodiment, the mounting surfaces A to F having a hexagonal configuration can be obtained. Since the substrate 72 has a shape close to a regular hexagon, it can irradiate substantially all directions equally. The angle α3 formed by the mounting surfaces A to F at this time is 120 degrees. For this reason, it is possible to continuously illuminate the entire circumference of the mounting surfaces A to E more uniformly than the regular pentagonal cross section as described above. FIG. 11D is an example of the light emitting module 81 of the sixth embodiment configured by the substrate 82 having an octagonal cross section. According to this embodiment, mounting surfaces A to H having an octagonal configuration can be obtained. The angles α4 formed by the mounting surfaces A to H are common and each is 135 degrees. For this reason, since the eight light emitters are arranged in a substantially circular state, the outer periphery along the outer surface of the substrate 82 can be illuminated evenly.

  In the light emitting modules of the form shown in FIGS. 11 (a) to 11 (d), all the mounting surfaces are symmetrical, and the area of each mounting surface is substantially the same. The space area facing the mounting surface can be illuminated uniformly. In addition, since the connecting means is also formed in a polygonal shape, a plurality of light emitting modules can be connected while shifting the connecting angle with each other, so that the surrounding space facing each mounting surface can be illuminated uniformly.

  Although a single light emitter is mounted on each mounting surface, a plurality of light emitters can be arranged in parallel if arrangement is possible. Furthermore, by changing the shape of the board so that a predetermined pair of mounting surfaces are wide, a plurality of light emitters are mounted side by side in this expanded space, so that a space facing a certain direction is partially It is possible to illuminate brightly.

  FIG. 12 shows an example of a light-emitting lamp 90 configured by sealing a light-emitting module assembly 10 formed by connecting a plurality of light-emitting modules 11 of the present invention in a cylindrical case 91. The light emitting module connector 10 is configured by connecting seven light emitting modules 11, and the connecting surfaces of the light emitting modules located at both ends are joined to a pair of sockets 91 a and 91 b having electrode terminals 92 and 93. The whole is sealed with a sealing body 94 made of a tube-like transparent glass or resin. Thus, by changing the number of connected light emitting modules, the light source has various brightnesses. Moreover, since the said light emission module coupling body can be made into the shape substantially the same as a straight tube | pipe type fluorescent lamp, it can also be attached to the conventional lighting fixture. In addition, various light-emitting effects can be obtained by selecting the light emission color of the light emitter constituting each light-emitting module or by adding a color or a fluorescent agent to the glass or resin covering the light-emitting module. it can.

DESCRIPTION OF SYMBOLS 10 Light emitting module coupling body 11 Light emitting module 12 Board | substrate 13 Light emitting body 14 Insulating layer 15,16 Metal member 15a, 16a Electrode surface 17a-17d Mounting surface 18a, 18b Connection surface 19 External substrate 20 Solder 21 Light emitting element 21a, 21b Element electrode 22 LED
23 chip substrate 24a, 24b chip electrode 25 resin body 30 light emitting module coupling body 31 light emitting module 32 substrate 33a convex portion 33b concave portion 34 insulating layer 35, 36 metal member 37a-37d mounting surface 38a, 38b coupling surface 40 light emitting module coupling body 41 , 42, 43 Light emitting module 51, 61, 71, 81 Light emitting module 52, 62, 72, 82 Substrate 90 Light emitting lamp 91 Case 91a, 91b Socket 92, 93 Electrode terminal 94 Sealed body

Claims (2)

A pair of metal members each having a regular polygonal cross section are formed with an insulating layer interposed therebetween, and each mounting surface having a plurality of identical polygonal sectional polygonal shapes having a pair of electrode surfaces on which the light emitter is mounted, and each mounting surface A substrate having a pair of connecting surfaces at both ends,
Each mounting surface is electrically connected to a pair of terminal electrodes of the light emitter on a pair of electrode surfaces sandwiching the insulating layer,
The pair of connecting surfaces are formed integrally with the pair of metal members, and include a convex portion that is electrically connected to one electrode surface of each mounting surface and a concave portion that is electrically connected to the other electrode surface. Have
Emitting module, wherein the peaks and valleys are made form by the regular polygon having a number of corners have multi than the number of the combined mounting surfaces. A pair of metal members each having a regular polygonal cross section are formed with an insulating layer interposed therebetween, and each mounting surface having a plurality of identical polygonal sectional polygonal shapes having a pair of electrode surfaces on which the light emitter is mounted, and each mounting surface A substrate having a pair of connecting surfaces at both ends,
Each mounting surface has a pair of terminal electrodes of the light emitter electrically connected to a pair of electrode surfaces sandwiching the insulating layer, and the pair of connection surfaces are formed integrally with the pair of metal members, It has a connecting means consisting of a convex portion electrically connected to one electrode surface of each mounting surface and a concave portion electrically connected to the other electrode surface, and the number of the convex portions and the concave portions combined with each mounting surface a light emitting module coupling body the light emitting module made form by the regular polygon having a number yet multifaceted comprising a plurality linked,
The convex portion and the concave portion are formed in a polygonal shape in which the convex portion of one light emitting module and the concave portion of another light emitting module can be fitted to each other ,
A light emitting module coupling body characterized in that a plurality of light emitting modules can be coupled at a predetermined angle by changing the fitting positions of the convex portions and concave portions of one light emitting module and another light emitting module.

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