JP2006024861A - Light emitting module and light emitting device - Google Patents

Abstract

Provided is a light emitting device (11) in which the influence of thermal expansion in the longitudinal direction of the light emitting module (12) is reduced and the light emitting module (12) can be easily attached to and detached from a base (13).
A light emitting module 12 includes a substrate 21 on which a plurality of light emitting diodes 22 are mounted along a longitudinal direction, a light control body 25 that controls light from each light emitting diode 22, a substrate 21, and a light control body 25. A case 31 is provided. An attachment / detachment connection portion 24 is projected from one end side of the substrate 21 in the longitudinal direction. The base 13 is provided with a plurality of connectors 45 for connecting the detachable connection portions 24 of the respective light emitting modules 12. One end side in the longitudinal direction of the substrate 21 is fixed by connection by the detachable connecting portion 24, and the other end in the longitudinal direction of the substrate 21 is a free end, thereby reducing the influence of thermal expansion in the longitudinal direction.
[Selection] Figure 1

Description

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

  2. Description of the Related Art Conventionally, in a light emitting device using a light emitting diode as a light source as a light emitting element, for example, a line light source in which a plurality of long light emitting modules are continuously arranged in a line along a long base is known. It has been.

  In the light emitting module used in this line light source, a plurality of light emitting diodes are mounted on a long substrate along the longitudinal direction, and an electric wire having a connector at the tip is led out from the substrate to supply power to the plurality of light emitting diodes. Has been. And when comprising a line light source, the connector of the electric wire pulled out from the adjacent light emitting module is mutually connected, and these light emitting modules are attached to the base.

In addition, there is a surface light source in which a plurality of square light emitting modules are arranged in a matrix, and a fixed connection portion protruding from the center of the light emitting module is inserted into the mounting board, and a plurality of light emitting modules are arranged inside the fixed connection portion. A pair of connection pins connected to the light emitting diodes are arranged. When configuring the surface light source, the fixed connection portion of the light emitting module is inserted and fixed to the mounting board, and the connector is inserted and connected to the connection pin inside the fixed connection portion from the opposite side of the mounting board (for example, (See Patent Document 1).
Japanese Patent Laid-Open No. 5-129661 (page 3, FIG. 5)

  By the way, in a light-emitting device using a light-emitting module using a light-emitting diode as a light source, the amount of heat generated by the light-emitting diode is large.

  A long light emitting module used for a line light source is greatly affected by thermal expansion in the longitudinal direction. For example, if the light emitting module is fixed to the base side, the wiring formed on the substrate is disconnected or the lens is distorted and optical The characteristics will deteriorate. Therefore, it is difficult to fix the light emitting module to the base side, and it is necessary to connect the light emitting module using an electric wire having a connector at the tip so that it is not affected by thermal expansion in the longitudinal direction. There is. Therefore, when attaching a light emitting module to a base, etc., it is difficult to handle an electric wire, and there is a problem that it takes time to attach and detach the light emitting module.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a light emitting module and a light emitting device that can reduce the influence of thermal expansion in the longitudinal direction and can be easily attached and detached.

  The light-emitting module according to claim 1 is a long substrate; a plurality of light-emitting elements disposed on the substrate along a longitudinal direction of the substrate; and light from each light-emitting element provided along the substrate. A light control body that controls light; and a detachable connection portion that is provided on one end side in the longitudinal direction of the substrate and is electrically connected to and mechanically fixed to a plurality of light emitting elements on the substrate. It is. The long shape means that the outer shape is not a square, for example, an elongated rectangle. Moreover, the one end side of the longitudinal direction of a board | substrate means that it is not the center of a board | substrate. Further, the attachment / detachment connection portion is a connection pin, a connection plug, or the like, and refers to a structure that can be attached to and detached from, for example, a connector on the side where the light emitting module is attached.

  The light emitting module according to claim 2 is a long substrate; a plurality of light emitting elements disposed along the longitudinal direction on the substrate; and controls light from each light emitting element provided along the substrate. A light-controlling body; a case having a through-hole and arranging the substrate and the light-controlling body along the longitudinal direction; and electrically connected to the plurality of light-emitting elements, at one end side in the longitudinal direction of the substrate, and The substrate includes a detachable connection portion that protrudes from the surface opposite to the surface on which the light emitting element is disposed and has a pair of connection pins that pass through the through holes of the case. Note that the case is made of resin or metal, and in the case of metal, heat dissipation of the light emitting element is effective.

  A light-emitting device according to claim 3 comprises the light-emitting module according to claim 1 or 2; a base on which the light-emitting module is disposed; and a connector provided on the base to which a detachable connection portion of the light-emitting module is connected. It is what you are doing.

  The light-emitting device according to claim 4 is a plurality of light-emitting modules according to claim 1 or 2; a base that is provided in a long length and is continuously arranged along the longitudinal direction; A plurality of connectors provided along the longitudinal direction to which the attachment / detachment connection portions of the respective light emitting modules are connected respectively.

  The light emitting device according to claim 5 is the light emitting device according to claim 4, further comprising a connecting member for connecting a plurality of connectors provided on the base.

  According to the light emitting module of claim 1, since the detachable connection portion is provided on one end side in the longitudinal direction of the substrate, one end side in the longitudinal direction of the substrate is fixed by connection by the detachable connection portion, and the other end in the longitudinal direction of the substrate is It becomes a free end, the expansion direction of the substrate or the like due to thermal expansion in the longitudinal direction can be mainly set as the free end direction, and it becomes easy to design a gap when arranging other light emitting modules in the longitudinal direction. Also, the attachment / detachment work can be easily performed by using the attachment / detachment connecting portion.

  According to the light emitting module of claim 2, the detachable connection portion in which a pair of connection pins protrudes on one surface of the substrate in the longitudinal direction and on the surface opposite to the surface on which the light emitting element of the substrate is disposed. Therefore, one end side in the longitudinal direction of the substrate is fixed by the connection by the detachable connection portion, the other end in the longitudinal direction of the substrate is a free end, and the expansion direction of the substrate due to thermal expansion in the longitudinal direction is mainly a free end direction. This makes it easier to design a gap when arranging other light emitting modules in the longitudinal direction. Also, the attachment / detachment work can be easily performed by using the attachment / detachment connecting portion.

  According to the light emitting device of the third aspect, since the connector to which the attachment / detachment connecting portion of the light emitting module is connected to the base on which the light emitting module according to the first or second aspect is disposed, the light emitting module can be easily attached and detached. .

  According to the light emitting device of claim 4, a plurality of light emitting modules according to claim 1 or 2 are connected to the base on which the light emitting modules of claim 1 or 2 are continuously arranged along the longitudinal direction. Since each connector is provided, each light emitting module can be easily attached and detached.

  According to the light emitting device of the fifth aspect, in addition to the effect of the light emitting device according to the fourth aspect, since the plurality of connectors provided on the base are connected by the connecting member, the power feeding structure can be simplified.

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

  FIG. 1 is a sectional view of the light emitting device in an exploded state, and FIG. 2 is a sectional view of the light emitting device in an assembled state.

  Reference numeral 11 denotes an elongated light emitting device constituting a line light source. The light emitting device 11 includes a plurality of light emitting modules 12 and a base 13 on which the plurality of light emitting modules 12 are detachably disposed.

  Each light emitting module 12 has a substrate 21 that is provided with a long length of glass epoxy resin or the like, for example. A wiring is formed on the substrate 21, and a plurality of light emitting diodes 22 that are solid light emitting elements as light emitting elements are provided. They are mounted (arranged) in a row in the longitudinal direction and arranged at a predetermined interval. A pair of positive and negative connection pins 23 connected to the plurality of light emitting diodes 22 from one side in the longitudinal direction of the substrate 21 and on the opposite side to the surface on which the light emitting diodes 22 are mounted, that is, the back surface. A detachable connecting portion 24 having a protrusion is provided. The pair of connection pins 23 are provided side by side in a direction intersecting the longitudinal direction of the substrate 21.

  On the surface side of the substrate 21 where the light emitting diodes 22 are mounted, a light control body 25 that controls light from each light emitting diode 22 is disposed. The light control body 25 is made of, for example, a transparent resin and is formed in a long shape, and a plurality of lens portions 26 arranged corresponding to the respective light emitting diodes 22 are formed in a line along the longitudinal direction. Yes.

  Each lens portion 26 is formed with a housing space 27 for accommodating the light emitting diode 22 on the back side, and an incident surface 28 on which light from the light emitting diode 22 is incident is formed on the inner surface facing the housing space 27. A reflection surface 29 for reflecting light from the light emitting diode 22 toward the front side is formed on the peripheral surface of the lens, and an emission surface 30 for emitting light from the light emitting diode 22 is formed on the front side of the lens portion 26.

  The substrate 21 and the light control body 25 are accommodated in and attached to the case 31 along the longitudinal direction. The case 31 is made of a metal such as aluminum and is formed in a long shape, and is formed in a substantially U-shaped cross section having a case base 32 and case side portions 33 on both sides, and is near one end of the case base 32. A hole 34 is formed through which a pair of connection pins 23 projecting from the substrate 21 penetrates in an insulated state. The case 31 accommodates the substrate 21 with its back surface joined to the case base 32, and the light control body 25 presses the substrate 21 against the case 31 between the case side portions 33 on both sides. It is inserted.

  The lengths in the longitudinal direction of the substrate 21, the light control body 25, and the case 31 of the light emitting module 12 are formed substantially the same.

  Further, the base 13 is made of a metal such as aluminum and is formed in a length corresponding to the length of the plurality of light emitting modules 12 to be arranged, and the base 41 and the side portions on both sides It is formed in a substantially U-shaped cross section having 42. A case 31 of the light emitting module 12 is inserted and attached between the insides of the side portions 42 on both sides, and a step portion 43 that regulates the insertion position by engaging the case 31 on the inner surfaces of the side portions 42 on both sides. A presser spring 44 as an urging member is formed on the inner surface of the side portion 42 formed on one side and presses and holds the case 31 against the other side portion 42. The presser spring 44 and the case 31 are in frictional contact, and the movement of the case 31 in the longitudinal direction relative to the base 13 is allowed.

  On the base portion 41 of the base 13, a connector 45 to which the connection pin 23 of the attachment / detachment connection portion 24 of each light emitting module 12 is detachably connected is arranged along the longitudinal direction corresponding to the arrangement interval of the light emitting modules 12. Has been. The connector 45 has a connector portion 46 to which the connection pin 23 of the detachable connection portion 24 is connected. The connector portion 46 is formed with a pair of insertion holes 47 into which the pair of connection pins 23 are inserted. A pair of terminals 48 that are electrically connected to the connection pin 23 are disposed inside the terminal. A pair of wire connection portions 49 connected to the respective terminals 48 are provided on both sides of the connector portion 46, and an electric wire 50 as a connection member is connected to each of the wire connection portions 49. A pair of electric wires 50 drawn out from the connector 45 located at one end of the base 13 is connected to a power supply unit (not shown) that supplies power to the light emitting diodes 22 of the respective light emitting modules 12, and adjacent connectors 45 on the base 13 are connected. They are connected to each other by a pair of electric wires 50.

  In order to assemble the light emitting device 11, each light emitting module 12 is inserted between the side portions 42 on both sides of the base 13, and the pair of connection pins 23 are inserted into the connector 45 and connected.

  On the other hand, by moving each light emitting module 12 in a direction to be taken out from between the side portions 42 on both sides of the base 13, the connection pin 23 is detached from the connector 45, and each light emitting module 12 can be detached from the base 13.

  Further, in the assembled state of the light emitting device 11, when the lighting of the light emitting diode 22 of each light emitting module 12 is not lighted, the thermal expansion in the longitudinal direction of each light emitting module 12 is considered between adjacent light emitting modules 12. Gaps are formed.

  When the light emitting diodes 22 of each light emitting module 12 are turned on, even if the light emitting module 12 is thermally expanded in the longitudinal direction due to the heat generated by the light emitting diodes 22, the connection pins 23 of the detachable connection portion 24 are the connectors 45 of the base 13. Even if the position of one end side in the longitudinal direction of the substrate 21 is regulated by being connected to the other end, the other end in the longitudinal direction of the substrate 21 is a free end. Thermal expansion is acceptable.

  Since a gap in consideration of the thermal expansion in the longitudinal direction of each light emitting module 12 is formed between adjacent light emitting modules 12, even if the light emitting module 12 is thermally expanded to the other end in the longitudinal direction, It is possible to prevent the effect that the formed wiring is disconnected or the light control body 25 is distorted to impair the optical characteristics.

  Thus, in order to project the detachable connection portion 24 having a pair of connection pins 23 from one side of the substrate 21 in the longitudinal direction and the surface opposite to the surface on which the light emitting diode 22 of the substrate 21 is mounted, One end side in the longitudinal direction of the substrate 21 is fixed by the connection by the detachable connecting portion 24, the other end in the longitudinal direction of the substrate 21 is a free end, and the expansion direction of the substrate 21 or the like due to thermal expansion in the longitudinal direction is mainly a free end direction. This makes it easier to design a gap when the other light emitting modules 12 are arranged in the longitudinal direction. In addition, the light emitting module 12 can be easily attached to and detached from the base 13 using the attachment / detachment connection portion 24.

  In addition, since the plurality of connectors 45 to which the attachment / detachment connection portions 24 of the respective light emitting modules 12 are connected are provided on the base 13 on which the plurality of light emitting modules 12 are continuously arranged along the longitudinal direction, Easy to attach and detach.

  Further, since the plurality of connectors 45 provided on the base 13 are connected by the electric wires 50, the power feeding structure can be simplified.

  The connecting member is not limited to the electric wire 50, and a terminal plate or the like may be used.

It is sectional drawing of the decomposition | disassembly state of the light-emitting device which shows one embodiment of this invention. It is sectional drawing of the assembly state of a light-emitting device same as the above.

Explanation of symbols

11 Light emitting device
12 Light emitting module
13 base
21 Board
22 Light-emitting diodes as light-emitting elements
23 Connection pin
24 Removable connection
25 Light control body
31 cases
45 connector
50 Electric wires as connecting members

Claims (5)

A long substrate;
A plurality of light emitting elements disposed on a substrate along a longitudinal direction of the substrate;
A light control body provided along the substrate for controlling light from each light emitting element on the substrate;
A detachable connection portion provided on one end side in the longitudinal direction of the substrate, electrically connected to a plurality of light emitting elements on the substrate, and mechanically fixed;
A light emitting module comprising: A long substrate;
A plurality of light emitting elements disposed along a longitudinal direction on the substrate;
A light control body provided along the substrate for controlling light from each light emitting element on the substrate;
A case having a through hole and arranging the substrate and the light control body along the longitudinal direction;
It is electrically connected to a plurality of light emitting elements, protrudes from one end side in the longitudinal direction of the substrate and from the surface opposite to the surface on which the light emitting elements of the substrate are disposed, and passes through the through hole of the case. A detachable connection having a pair of connection pins;
A light emitting module comprising: The light emitting module according to claim 1 or 2;
A base on which the light emitting module is disposed;
A connector provided on the base and connected to a detachable connection portion of the light emitting module;
A light-emitting device comprising: A plurality of light emitting modules according to claim 1 or 2;
A base provided with a plurality of light emitting modules continuously arranged along the longitudinal direction;
A plurality of connectors provided along the longitudinal direction of the base, to which the attachment / detachment connection portions of the respective light emitting modules are respectively connected;
A light-emitting device comprising:   The light emitting device according to claim 4, further comprising a connecting member that connects a plurality of connectors provided on the base.

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