JP2011082382A - Connection type led array unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection type LED array unit having high flexibility in layout in which a plurality of LED array units can be interconnected. <P>SOLUTION: One connection type LED array unit 10 and the other connection type LED array unit 20 are linearly arrayed and connected together by pressing a pair of connection pins formed on a distal end surface of a housing 11 of the one connection type LED array unit 10 into a pair of connection holes formed on a proximal end surface of a housing 21 of the other connection type LED array unit 20 to engage them with each other. In this connection state, a circuit pattern 13 formed in the one housing 11 and a circuit pattern 23 formed in the other housing 21 are electrically connected to each other, so that 12 LED chips linearly arrayed in the connection type LED array units 10 and 20 can each illuminate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an LED array unit including a plurality of LED chips or LED packages arranged in a straight line, and more particularly to a connected LED array unit configured to be connected to each other.

  An LED array unit including a plurality of LED chips or LED packages arranged in a straight line is generally known. This type of LED array unit is used, for example, as a “light source module” or “LED backlight unit” for a backlight of a liquid crystal display (see Patent Documents 1, 2, and 3).

JP 2002-164638 A JP 2007-227374 A JP 2008-60204 A

  Incidentally, the LED array units such as the “light source module” described in Patent Document 1 and the “LED backlight unit” described in Patent Documents 2 and 3 are all configured as independent single units. For this reason, there is a problem that the degree of freedom of layout is low, such as connecting a plurality of LED array units arranged in a straight line in the longitudinal direction or connecting them in parallel in the width direction.

  The present invention has been made in response to such problems of the prior art, and provides a connected LED array unit having a high degree of freedom in layout in which a plurality of LED array units can be connected to each other. Let it be an issue.

  In order to solve such a problem, a connected LED array unit according to the present invention includes a plate-shaped housing on which a circuit pattern for power feeding is formed, and a circuit pattern arranged in a straight line along the longitudinal direction of the housing. A connection type LED array unit including a plurality of LED chips or LED packages connected to each other, a connection part for connecting housings of the LED array units connected to each other, and formed in each housing And a connector portion for electrically connecting the circuit patterns to each other.

  In the connection type LED array unit according to the present invention, the housings of the LED array units connected to each other are connected to each other by a connection portion, and the circuit patterns formed on the housings are electrically connected to each other by the connector portion. By doing so, a plurality of LED chips or LED packages of the LED array units connected to each other can be turned on.

  In the connection type LED array unit of the present invention, the connection portion may be configured to connect the housings of the LED array units connected to each other in a straight line in the longitudinal direction. You may be comprised so that it may arrange in parallel and parallel to a direction. Moreover, you may be comprised so that housings may be connected in T shape.

  Moreover, in the connection type LED array unit of the present invention, the connector part can be configured to also serve as the connection part.

  Furthermore, in the connection type LED array unit of the present invention, the connector part includes a connector convex part having a conductive plating layer formed on one of the housings connected to each other, and the other of the connector convex part. It can be comprised with the connector recessed part which has the electroconductive plating layer formed in the housing.

  In this case, in order to facilitate the molding of the connector convex portion and the connector concave portion and to facilitate the connection work between them, the connector convex portion has a semicircular planar shape at the tip portion, and the connector concave portion is the back portion. It is preferable to have a semicircular planar shape.

  In the connection type LED array unit according to the present invention, the housings of the connection type LED array units connected to each other are connected to each other by the connection part, and the circuit pattern formed on each housing is electrically connected to each other by the connector part. The plurality of LED chips or LED packages of the connected LED array units connected to each other can be turned on. Therefore, according to the connection type LED array unit of the present invention, a plurality of connection type LED array units can be connected to each other, and a highly flexible layout is possible.

It is a perspective view of the connection type LED array unit concerning a 1st embodiment of the present invention. It is an expansion perspective view of the reflector recessed part formed in the housing of the connection type LED array unit of 1st Embodiment. It is a circuit diagram of the circuit pattern formed in the housing of the connection type LED array unit of 1st Embodiment. It is an expansion perspective view of the connection part and connector part which were formed in the housing of the connection type LED array unit of 1st Embodiment. It is a perspective view which shows the modification of the connection type LED array unit of 1st Embodiment. It is a perspective view of the connection type LED array unit which concerns on 2nd Embodiment of this invention. It is a perspective view of the connection type LED array unit which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the example of a connection of the connection type LED array unit which concerns on 3rd Embodiment.

  Hereinafter, an embodiment of a connected LED array unit according to the present invention will be described with reference to the accompanying drawings. The coupled LED array unit of the first embodiment shown in FIG. 1 is used, for example, for a backlight of a liquid crystal display, and includes two coupled LED array units 10 and 20 that are coupled to each other. .

  The connected LED array units 10 and 20 are, for example, 12 on the inner surfaces of the housings 11 and 21 each having a long plate shape with an L-shaped cross section and the longitudinal pieces 11A and 21A of the housings 11 and 21 along the longitudinal direction thereof. LED chips (see FIG. 2) arranged in a straight line one by one and formed from the inner surfaces of the vertical pieces 11A and 21A of the housings 11 and 21 to the upper surfaces of the horizontal pieces 11B and 21B so as to supply power to these LED chips. Circuit patterns 13 and 23.

  The housings 11 and 21 have an appropriate length in the range of, for example, 100 to 150 mm, and are formed of a synthetic resin having high heat resistance and high thermal conductivity, such as polyphenylene sulfide (PPS). The housings 11 and 21 may be made of polycarbonate (PC), liquid crystal polymer (LCP), polyphthalylamide (PPA), polyamide (PA), or the like.

  On the inner surfaces of the vertical pieces 11A and 21A of the housings 11 and 21, a plurality of reflector recesses 11C and 21C for receiving and mounting the LED chips arranged in a straight line are formed at predetermined intervals. . As shown in an enlarged view in FIG. 2, the reflector recesses 11C and 21C have a rectangular front shape, and the LED chips 12 and 22 are mounted on the bottom thereof.

  Each of the LED chips 12 and 22 emits blue light to emit white light, for example, and is encapsulated by an encapsulating resin (not shown) such as an epoxy resin or a silicon resin filled in the reflector recesses 11C and 21C. In this encapsulating resin, a phosphor that emits a complementary yellow color by the blue emission of the LED chips 12 and 22 is dispersed and blended.

  The circuit patterns 13 and 23 are constituted by a conductive plating layer having a three-layer structure in which copper (Cu), nickel (Ni), and silver (Ag) plating layers are sequentially laminated, for example. The conductive plating layer may have a five-layer structure in which silver (Ag), nickel (Ni), copper (Cu), nickel (Ni), and silver (Ag) plating layers are sequentially stacked.

  As shown in the circuit diagram of FIG. 3, the circuit pattern 13 formed on the housing 11 of one connected LED array unit 10 includes six LED chips 12, 12... Arranged on the base end side of the housing 11. A circuit pattern 13A connected in series and a circuit pattern 13B connected in series to the six LED chips 12, 12... Arranged on the front end side of the housing 11.

  Similarly, the circuit pattern 23 formed on the housing 21 of the other connected LED array unit 20 is a circuit pattern 23A for connecting six LED chips 22, 22... Arranged in the base end side of the housing 21 in series. And a circuit pattern 23B for connecting six LED chips 22, 22... Arranged in the front end side of the housing 21 in series.

  Here, circuit patterns 13C and 13D connectable to circuit patterns 23A and 23B formed on the other housing 21 are formed in one housing 11, and the circuit patterns 13C and 13D and circuit patterns 13A and 13B are formed. Are formed on the base end side of one housing 11. And this collective electrode is connected to the power supply circuit which has each resistance R, switch SW, and converter CV via the 8-pin connector CN, for example.

  Here, between the front end surface of the housing 11 of one connected LED array unit 10 shown in FIG. 1 and the base end surface of the housing 21 of the other connected LED array unit 20, the one housing 11 and the other And a circuit pattern 13C, 13D formed on one housing 11 and a circuit pattern 23A, 23B formed on the other housing 21 with each other. And a connector portion for electrical connection to (see FIG. 4).

  As shown in an enlarged view in FIG. 4, the connecting portion includes a pair of left and right connecting pins 14 </ b> A and 14 </ b> A formed to project from the front end surface of the horizontal piece 11 </ b> B of one housing 11, and the connecting pins 14 </ b> A and 14 </ b> A are detachable. And a pair of left and right connecting holes 14B, 14B formed on the base end surface of the horizontal piece 21B of the other housing 21 so as to be able to be pressed and fitted.

  The pair of connecting pins 14A and 14A may be formed on the front end surface of the vertical piece 11A of one housing 11, or formed separately on the front end surface of the vertical piece 11A and the front end surface of the horizontal piece 11B. May be. In this case, the pair of connection holes 14B and 14B are formed on the front end surface of the vertical piece 21A of the other housing 21, or are formed separately on the front end surface of the vertical piece 21A and the front end surface of the horizontal piece 21B. .

  The connector portion is formed so that the four connector convex portions 15A, 15A,..., Formed so as to protrude from the front end surface of the horizontal piece 11B of one housing 11, and the connector convex portions 15A, 15A,. It is comprised by four connector recessed parts 15B, 15B ... formed in the base end surface of the horizontal piece 21B of the other housing 21. As shown in FIG.

  Here, the connector protrusions 15A, 15A... And the connector recesses 15B, 15B... Have a planar shape that facilitates the molding and facilitates the connection work between them. In other words, the connector convex portions 15A, 15A... Are formed in a semicircular planar shape at the tip portion, and the connector concave portions 15B, 15B.

  A conductive plating layer continuous to the circuit patterns 13C and 13D formed on one housing 11 is formed on the surface of the connector convex portions 15A, 15A..., And the other surface is formed on the surface of the connector concave portions 15B, 15B. A conductive plating layer that is continuous with the circuit patterns 23 </ b> A and 23 </ b> B formed on the housing 21 is formed.

  In the connection type LED array unit according to the first embodiment configured as described above, a pair of connection pins 14A and 14A formed to protrude from the front end surface of the housing 11 of one connection type LED array unit 10, and the other The pair of connection holes 14B and 14B formed on the base end surface of the housing 21 of the connection type LED array unit 20 are pushed and fitted, so that the housing 11 of one connection type LED array unit 10 and the other connection type LED are connected. The housing 21 of the array unit 20 is connected in a straight line in the longitudinal direction.

  At that time, the four connector projections 15A, 15A,... Formed on the front end surface of the housing 11 of one connected LED array unit 10 and the base end surface of the housing 21 of the other connected LED array unit 20 are formed. The four connector recesses 15B, 15B... Are pressed and fitted, so that the circuit patterns 13C and 13D formed on one housing 11 and the other housing 21 via a conductive plating layer formed on the surface thereof. The circuit patterns 23A and 23B formed in the above are electrically connected to each other.

  As a result, the twelve LED chips 12, 12,... And the LED chips 22, 22,... Arranged in a straight line on the connected LED array units 10, 20 connected in a straight line can be turned on.

  That is, according to the connection type LED array unit of the first embodiment, the two connection type LED array units 10 and 20 can be linearly connected as necessary, and each connection type LED array unit is connected in the connection state. The twelve LED chips 12, 12,... And the LED chips 22, 22,... Arranged in a straight line at 10, 20 can be turned on, so that a layout with a high degree of freedom is possible.

  The connected LED array unit of the present invention is not limited to the first embodiment described above. For example, the connecting portion composed of the pair of connecting pins 14A, 14A and the pair of connecting holes 14B, 14B shown in FIG. 4 is omitted, and the functions of the connecting portions are the connector convex portions 15A, 15A. You may make it share with the connector part comprised by 15B ....

  Moreover, the shape of the housings 11 and 21 of the connection type LED array units 10 and 20 shown in FIG. 1 can be changed to a long plate shape as shown in FIG.

  Here, the connected LED array unit of the present invention can be configured as the connected LED array units 30 and 40 of the second embodiment shown in FIG. The connection type LED array units 30 and 40 are connected to each other in a straight line, and include housings 31 and 41 having a horizontally long bar shape with a rectangular cross-sectional shape. On the upper surfaces of the housings 31 and 41, 16 surface-mounted LED packages 32 and 42 are respectively arranged in a straight line along the longitudinal direction thereof.

  Circuit patterns 33 and 43 for supplying power to the LED packages 32 and 42 are formed on the upper surfaces of the housings 31 and 41. Although not shown, a connecting portion and a connector portion configured in the same manner as shown in FIG. 4 are provided between the distal end surface of one housing 31 and the proximal end surface of the other housing 41. Yes.

  Moreover, the connection type LED array unit of this invention can be comprised as the connection type LED array unit 50 of 3rd Embodiment shown in FIG. This connected LED array unit 50 is provided with a thick plate-like housing 51 having a rectangular planar shape, and four surface mount LED packages 52, 52. Are arranged in a straight line along. A circuit pattern 53 for supplying power to these LED packages 52, 52... Is formed on the upper surface of the housing 51.

  Here, on one end surface of the housing 51, a pair of left and right connection holes 54B, 54B and two connector recesses 55B corresponding to the pair of left and right connection holes 14B, 14B and the four connector recesses 15B, 15B shown in FIG. 55B is formed. Although not shown, a pair of left and right connecting holes and two connector recesses are also formed in the longitudinal center of one side surface of the housing 51.

  A pair of left and right connecting pins 54A corresponding to the pair of left and right connecting pins 14A, 14A and the four connector protrusions 15A, 15A,... Shown in FIG. , 54A and two connector projections 55A, 55A are formed.

  As shown in the figure, the connection type LED array unit 50 shown in FIG. 7 can be connected to another connection type LED array unit 50 similarly configured in a T shape. In this case, a pair of left and right connecting pins 54A and 54A formed at the center in the longitudinal direction on the other side of the housing 51 of one connected LED array unit 50, and one end surface of the housing 51 of the other connected LED array unit 20 The pair of left and right connecting holes 54B and 54B formed in the above are pushed and fitted.

  In that case, two connector convex parts 55A and 55A formed in the longitudinal direction center part in the other side of housing 51 of one connection type LED array unit 50, and one end surface of housing 51 of the other connection type LED array unit 20 When the two connector recesses 55B and 55B formed on the housing are pressed and fitted, the circuit pattern 53 formed on one housing 51 and the circuit pattern 53 formed on the other housing 51 are electrically connected to each other. Connected to. As a result, the four LED chips 52, 52,... Linearly arranged on each of the connected LED array units 50, 50 connected in a T shape can be turned on.

  Further, as shown in FIG. 8, the connected LED array unit 50 shown in FIG. 7 can be connected linearly to other connected LED array units 50 similarly configured, They can also be connected in parallel. When connecting to each other linearly, a pair of left and right connecting pins 54A and 54A and two connector projections 55A and 55A formed on the other end surface of one connected LED array unit 50, and the other connected LED array unit. A pair of left and right connecting holes 54B, 54B and two connector recesses 55B, 55B formed on one end face of 50 are respectively pressed and fitted.

  On the other hand, when connecting in parallel with each other, a pair of left and right connection pins 54A, 54A and two connector protrusions 55A formed at the center in the longitudinal direction on the other side surface of the housing 51 of one connection type LED array unit 50, 55A and a pair of left and right connection holes (not shown) and two connector recesses formed in the central portion in the longitudinal direction on one side surface of the housing 51 of the other connection type LED array unit 50 are pressed and fitted.

DESCRIPTION OF SYMBOLS 10,20 ... Connection type LED array unit 11, 21 ... Housing 12, 22 ... LED chip 13, 23 ... Circuit pattern 13A-13D ... Circuit pattern 23A, 23B ... Circuit pattern 14A ... Connection pin 14B ... Connection hole

Claims (6)

A connected type LED array comprising a plate-like housing on which a power supply circuit pattern is formed, and a plurality of LED chips or LED packages arranged in a straight line along the longitudinal direction of the housing and connected to the circuit pattern A unit,
A connection part for connecting the housings of the LED array units connected to each other and a connector part for electrically connecting circuit patterns formed on the housings to each other are provided. A connected LED array unit. The connected LED array unit according to claim 1, wherein the connecting portion is configured to connect the housings of the LED array units connected to each other in a linear manner in the longitudinal direction. The connected LED array unit according to claim 1, wherein the connecting portion is configured to connect the housings of the LED array units connected to each other in parallel in the width direction. The connection type LED array unit according to claim 1, wherein the connection part is configured to connect the housings of the LED array units connected to each other in a T shape. The connected LED array unit according to claim 1, wherein the connector portion also serves as the connecting portion. The connector portion has a connector convex portion having a conductive plating layer formed on one of the housings connected to each other, and a connector having a conductive plating layer formed on the other housing so as to be fitted to the connector convex portion. The connection type LED array unit according to claim 1, wherein the connection type LED array unit is configured by a recess.