JP2006210625A - Light emitting module and light emitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide light emitting modules 11 which are easily made variable in light emitting area and capable of coping with a single power source. <P>SOLUTION: The substrates 13 of the light emitting modules 11 are arranged into a square shape, and a terminal unit 18 connected to a circuit pattern located on the substrate 13 is provided to all the sides 12 of the substrates 13, respectively. The substrates 13 are arranged by making their sides 12 adjoining to each other to constitute a light emitting surface in one piece, and the adjoining substrates 13 are electrically connected together with the terminal units 18. The light emitting modules 11 are connected to a constant-current circuit, and a constant current is fed to the light emitting modules 11 from the single constant-current circuit. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a light emitting module and a light emitting device using a light emitting element.

  Conventionally, as a light emitting device using, for example, a light emitting diode which is a solid light emitting element as a light emitting element, there is an illumination device in which a plurality of light emitting modules are attached to one module socket.

  In the light emitting module, a circuit pattern is formed on a substrate via an insulating layer, and a plurality of light emitting diodes are arranged and electrically connected on the circuit pattern. A constant current circuit for supplying a constant current for stabilizing the lighting state of the light emitting diode is also disposed on the substrate.

Then, by attaching a plurality of light emitting modules to one module socket, the constant current circuit of each light emitting module is connected in parallel to the power supply source, and the constant current circuit is connected to the light emitting diode of each light emitting module. A current is supplied for lighting (for example, refer to Patent Document 1).
JP 2004-253364 A (Page 5-7, FIG. 1-3)

  However, conventionally, although the number of light emitting modules attached to one module socket can be varied, for example, a plurality of light emitting modules cannot be combined with each other to form an integrated large area light emitting surface.

  In addition, when a plurality of light emitting modules are combined with each other to form an integrated large area light emitting surface, a constant current circuit is provided for each light emitting module. There is a problem that not only the cost increases but also the constant current circuit of each light emitting module must be connected to a power supply source for each constant current circuit, and the connection becomes complicated.

  The present invention has been made in view of the above points. A light emitting module that can easily change the light emitting area and can be handled by a single power source, and a constant current from one constant current circuit to a plurality of light emitting modules. It is an object to provide a light emitting device that can be supplied and can be easily connected.

  The light emitting module according to claim 1 is a polygonal substrate; a circuit pattern formed on the substrate; a light emitting element electrically connected to the circuit pattern; and connected to the circuit pattern on all sides of the substrate. By combining the sides of a plurality of substrates and electrically connecting the terminals, it is possible to change the light emission area and to handle with a single power source. . The polygonal substrate includes a regular polygon having the same side length, such as a regular triangle, a square, a regular hexagon, or a rectangle. The terminal portion includes a part of the circuit pattern or another terminal member.

  The light emitting module according to claim 2 is the light emitting module according to claim 1, wherein at least one of the terminal portions is an input terminal portion and the remaining is an output terminal portion, and the adjacent substrates are electrically connected to each other. It has a connector that is connected mechanically and mechanically, and can be easily connected by a connector simply by combining the sides of adjacent boards.

  A light emitting device according to claim 3 comprises a constant current circuit for supplying a constant current; and a plurality of light emitting modules according to claim 1 or 2 connected to the constant current circuit. A constant current from the current circuit is supplied to a plurality of light emitting modules combined with each other.

  According to the light emitting module of the first aspect, since the terminal portions connected to the circuit pattern on the substrate are provided on all sides of the polygonal substrate, the sides of the plurality of substrates are combined to be electrically connected between the terminal portions. The light emitting area can be easily changed, and a single power source can be used.

  According to the light emitting module of the second aspect, in addition to the effect of the light emitting module according to the first aspect, by using the connector provided on the side of the board, it is only necessary to combine the sides of the adjacent boards. And can be easily connected mechanically.

  According to the light emitting device according to claim 3, since the plurality of light emitting modules according to claim 1 or 2 can be connected to the constant current circuit, the constant current from one constant current circuit is supplied to the plurality of light emitting modules. Can be connected easily.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 is a front view in which a plurality of light emitting modules are combined, FIG. 2 is a front view illustrating an example of a circuit pattern in the light emitting modules, and FIG. 3 is a configuration diagram of a light emitting device using the light emitting modules.

  In FIG. 1, a light emitting module 11 is shown, and the light emitting module 11 has a square substrate 13 in which four sides 12 have the same length. The substrate 13 is formed of a material having excellent thermal conductivity such as aluminum, for example, and an insulating layer 14 is formed on one surface of the substrate 13 as shown in FIG. A circuit pattern 15 having conductivity is formed. On this circuit pattern 15, a plurality of light emitting diodes 16 which are solid light emitting elements as light emitting elements are arranged and electrically and mechanically connected. One surface of the substrate 13 on which the plurality of light emitting diodes 16 are arranged is configured as a light emitting surface.

  As shown in FIG. 1, for example, by combining the sides 12 of the four light emitting modules 11 into a square shape and forming an integral light emitting surface, the area of the light emitting surface of one light emitting module 11 is A light emitting surface having a quadruple area can be formed.

  A terminal portion 18 connected to the circuit pattern 15 is provided at the center of all sides 12 on one surface of each substrate 13. At least one of these terminal portions 18 is an input terminal portion, and the rest are output terminal portions.

  The terminal portions 18 of the input terminal portion and the output terminal portion of the substrate 13 of the adjacent light emitting module 11 are adjacent to each other and can be electrically connected. A connector 19 is provided on the terminal portion 18 of the substrate 13 so as to face the side 12, and adjacent to each other by connecting the connectors 19 of the input terminal portion and the output terminal portion of the substrate 13 of the adjacent light emitting module 11 to each other. The light emitting module 11 can be electrically and mechanically connected.

  2 shows an example of the circuit pattern 15. The circuit pattern 15 includes three series-parallel circuits 21, 22, and 23. Each series-parallel circuit 21, 22, and 23 includes each side 12 The input / output portions 21a, 22a, and 23a wired to the terminal portion 18 are formed, and a plurality of connection portions 21b, 22b, and 23b that are connected to the input / output portions and connect the plurality of light emitting diodes 16 are formed. . On the substrate 13, a plurality of connection portions 21b, 22b, and 23b are arranged at equal intervals. Therefore, a plurality of light-emitting diodes 16 connected to the plurality of connection portions 21b, 22b, and 23b are arranged at equal intervals. Has been.

  Although not shown, each light emitting module 11 is combined with a reflector for reflecting the light of each light emitting diode 16, a lens for controlling light, or the like on one surface side of the substrate 13.

  At the four corners of the substrate 13, mounting holes 26 are formed for attaching the other surface opposite to the one surface of the substrate 13 to a metal case having excellent thermal conductivity with a screw or the like.

  3, a light emitting device 31 is shown. The light emitting device 31 includes, for example, a power source unit 32 connected to a commercial power source and a plurality of light emitting modules 11 connected in series to the power source unit 32. The power supply unit 32 includes a constant current circuit 33 that supplies a constant current to the plurality of light emitting modules 11. It should be noted that the number of connected light emitting modules 11 can be increased within a range in which constant current can be supplied from the constant current circuit 33 to the plurality of light emitting modules 11.

  In the light emitting device 31, for example, as shown in FIG. 1, four light emitting modules 11 are combined in a square shape to form an integrated light emitting surface, or a plurality of light emitting modules 11 are combined in one row to make a long integrated body. An integrated light emitting surface can be formed by combining with any shape, such as forming a light emitting surface of a shape.

  When combining a plurality of light emitting modules 11, the plurality of light emitting modules 11 can be connected in series to a single power supply unit 32 by electrically connecting the terminal portions 18 of the adjacent light emitting modules 11. At this time, by using the connector 19 provided on the terminal portion 18, the connection can be easily made electrically and mechanically only by combining the sides of the adjacent substrates 13.

  Therefore, the constant current from the constant current circuit 33 of the single power supply unit 32 can be supplied to the plurality of light emitting modules 11, and the light emitting diodes 16 of the respective light emitting modules 11 can be turned on.

  The substrate 13 is not limited to a square, but includes a regular polygon having the same length of the side 12, such as a regular triangle or a regular hexagon, or a polygon such as a rectangle. In this case, a shape in which a plurality of substrates 13 can form an integrated light emitting surface in which the sides 12 are combined and assembled together is preferable.

  Further, the terminal portion 18 may use a part of the circuit pattern 15 or another terminal member.

  Further, it is preferable to use a connector 19 that is electrically and mechanically connected to each other for connection between the terminal portions 18 of the adjacent substrates 13, but using another wiring member such as a lead wire. Also good.

It is the front view which combined the several light emitting module which shows one embodiment of this invention. It is a front view which shows an example of the circuit pattern in a light emitting module same as the above. It is a block diagram of the light-emitting device using a light emitting module same as the above.

Explanation of symbols

11 Light emitting module
12 sides
13 Board
15 Circuit pattern
16 Light-emitting diodes as light-emitting elements
18 Terminal
19 Connector
31 Light emitting device
33 Constant current circuit

Claims (3)

A polygonal substrate;
A circuit pattern formed on the substrate;
A light emitting element electrically connected to the circuit pattern;
Terminal portions connected to the circuit pattern and provided on all sides of the substrate;
A light emitting module comprising:   The terminal portion is characterized in that at least one of the terminal portions is an input terminal portion and the rest is an output terminal portion, and has connectors that are electrically and mechanically connected to each other between adjacent substrates. The light emitting module according to 1. A constant current circuit for supplying a constant current;
A plurality of light emitting modules according to claim 1 or 2 connected to a constant current circuit;
A light-emitting device comprising:

Images