JP2023007991A - Circuit board, assembly component set of electric apparatus, and electric apparatus - Google Patents

Abstract

To provide an assembly component set or the like capable of easily changing a size.SOLUTION: An assembly component set of an electric apparatus, comprises: a first circuit board; a second circuit board; and a first connection part connected to the first circuit board and the second circuit board. Each of the first circuit board and the second circuit board includes: a substrate provided with an electric circuit; a first connector including a pair of circuit pins connected to the electric circuit and a pair of first pins separated from the electric circuit; a second connector including a pair of second pins; a pair of substrate cable ways connecting the pair of first pins and the pair of second pins. The first connection part includes a pair of connection cable ways which can electrically connect the pair of second pins of the first circuit board with the pair of circuit pins of the second circuit board.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a circuit board, an electrical device assembly set, and an electrical device.

In recent years, as described in Patent Document 1 below, backlights for liquid crystal displays have been developed as an example of electrical devices. A backlight uses a technique called local dimming. Local dimming is a technique of dividing a backlight into a plurality of regions and controlling luminance for each of the plurality of regions.

In the backlight disclosed in Patent Document 1, each of the plurality of regions where local dimming is performed is configured by a circuit board on which light emitting elements are mounted. More specifically, in the backlight, a plurality of circuit boards are arranged in a matrix. A plurality of light emitting elements, for example, a plurality of LEDs (Light Emitting Diodes) are mounted on the respective surfaces of the plurality of circuit boards. A plurality of LEDs are electrically connected to form an electrical circuit on the surface of the circuit board.

JP 2007-288194 A

In the backlight, which is an example of the electrical device disclosed in Patent Document 1, substrate electric paths extend from the rear surfaces of a set of circuit substrates arranged in a matrix to one LED control substrate. Therefore, the pattern of the board electric path on the back surface is different for each set of circuit boards. Therefore, when the size of the backlight is changed, it becomes necessary to change the substrate electric paths on the back surface of one set of circuit substrates. Therefore, it is not possible to flexibly cope with changes in the size of the backlight. In other words, it is not possible to easily change the size of the electrical device.

The present disclosure has been made in view of the above problems. SUMMARY OF THE DISCLOSURE It is an object of the present disclosure to provide a circuit board, an electrical device assembly set, and an electrical device that can be easily resized.

A circuit board according to one aspect of the present disclosure includes a board provided with an electric circuit, a first connector including a pair of circuit pins connected to the electric circuit, and a pair of first pins separated from the electric circuit. , a second connector including a pair of second pins; and a pair of substrate electric paths connecting the pair of first pins and the pair of second pins.

An electrical device assembly set according to one aspect of the present disclosure includes a first circuit board, a second circuit board, and a first connection section that can be connected to the first circuit board and the second circuit board, Each of the first circuit board and the second circuit board includes a board provided with an electric circuit, a pair of circuit pins connected to the electric circuit, and a pair of first pins separated from the electric circuit. a first connector including a pair of second pins; a second connector including a pair of second pins; and a pair of substrate electric paths connecting the pair of first pins and the pair of second pins, wherein the first connecting portion includes the It includes a pair of connecting electric paths capable of electrically connecting the pair of second pins of the first circuit board and the pair of circuit pins of the second circuit board.

An electrical device according to one aspect of the present disclosure includes a first circuit board, a second circuit board, a first connection section connected to the first circuit board and the second circuit board, the first circuit board and the a control unit for controlling a second circuit board, wherein each of the first circuit board and the second circuit board includes a board provided with an electric circuit, a pair of circuit pins connected to the electric circuit, and a first connector including a pair of first pins separated from the electrical circuit; a second connector including a pair of second pins; and a pair of substrates connecting the pair of first pins and the pair of second pins. and an electrical path, wherein the first connection portion includes a pair of connection electrical paths that electrically connect the pair of second pins of the first circuit board and the pair of circuit pins of the second circuit board. wherein the control unit transmits a first signal for controlling the electric circuit of the first circuit board via the pair of circuit pins of the first circuit board; A second circuit board for controlling the electrical circuit of the second circuit board via the first pin, the pair of board electrical paths, the pair of second pins, and the pair of circuit pins of the second circuit board. 2 send a signal.

2 is a schematic plan view of the surface of the circuit board of Embodiment 1. FIG. 4 is a schematic plan view of the surface of the connecting portion of Embodiment 1. FIG. FIG. 2 is a schematic plan view of the surface of the backlight of one example of the electrical device of Embodiment 1; FIG. 8 is a schematic plan view of the surface of the circuit board according to the second embodiment; FIG. 10 is a schematic plan view of the surface of the connecting portion of the second embodiment; FIG. 10 is a schematic plan view of the surface of a backlight of an example of the electrical device of Embodiment 2; FIG. 11 is a schematic plan view of the surface of a backlight of an example of the electrical device of Embodiment 3; FIG. 12 is a schematic plan view of the back surface of the backlight of one example of the electrical device of Embodiment 3;

A circuit board, an electrical device assembly set, and an electrical device of the present disclosure will now be described with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description of the same or equivalent elements will not be repeated.

(Embodiment 1)
FIG. 1 is a schematic plan view of a circuit board CB of Embodiment 1. FIG.

As shown in FIG. 1, the circuit board CB includes a board B and a first connector C1 and a second connector C2 provided on the surface of the board B. As shown in FIG. The structure provided on the surface of the circuit board CB is axisymmetric with respect to an imaginary line connecting midpoints of opposing long sides of the rectangle in plan view. It is assumed that nothing is formed on the back surface of the circuit board CB of the present embodiment. In other words, it is assumed that only the plane of the board B exists as the back surface of the circuit board CB of the present embodiment.

The substrate B is a rectangular plate material in a plan view. The substrate B has insulating properties. The surface of the substrate B is provided with an electric circuit EC. The surface of the substrate B is provided with a pair of substrate electric paths EP and another pair of substrate electric paths EPa. A pair of substrate electric paths EP are composed of a pair of electric wirings EW. Another pair of substrate electric paths EPa is also made up of a pair of electric wires EW. However, the pair of substrate electric paths EP and the other pair of substrate electric paths EPa may be of any type as long as they are paths through which electricity flows, and may include fittings or the like (not shown) other than the electric wiring EW. good.

The electric circuit EC includes a plurality of light emitting elements L. As shown in FIG. A plurality of light emitting elements L are connected in series by circuit wiring CW printed on the surface of the substrate B. FIG. Each of the plurality of light emitting elements L is an LED (Light Emitting Diode). A plurality of light emitting elements L according to the present embodiment are arranged in a matrix on the surface of the substrate B. As shown in FIG. Therefore, the light emitted from the plurality of light emitting elements L on the surface of the substrate B is made uniform.

A plurality of light-emitting elements L and circuit wiring CW that constitute the electric circuit EC shown in FIG. are placed in However, in FIG. 1, the light-emitting elements on the right side of the above-described imaginary line among the plurality of light-emitting elements L are not denoted by reference numerals in order to make the drawing easier to see.

Note that the electric circuit EC may include anything other than the plurality of light emitting elements L or instead of the plurality of light emitting elements L, such as capacitors, resistors, coils, transistors, or other circuit elements. . In other words, the electric circuit EC may be anything as long as it functions as an electric circuit.

The first connector C1 includes a pair of circuit pins CP and a pair of first pins P1. A pair of circuit pins CP are connected to both ends of the electric circuit EC, respectively. The pair of first pins P1 are not connected to the electric circuit EC. That is, the pair of first pins P1 are separated from the electric circuit EC. The first connector C1 further includes another pair of first pins P1a.

The second connector C2 includes a pair of second pins P2. The pair of second pins P2 are not connected to the electric circuit EC. That is, the pair of second pins P2 are separated from the electric circuit EC. The second connector C2 includes another pair of second pins P2a. The other pair of second pins P2a are not connected to the electric circuit EC. That is, the other pair of second pins P2a are separated from the electric circuit EC.

In this specification, all pins may be anything as long as they have conductivity and function as electrical connections.

In the present embodiment, each of the first connector C1 and the second connector C2 has a bar shape extending along the longitudinal direction of the rectangular substrate B, that is, along the long sides. The first connector C1 and the second connector C2 are arranged on the surface of the board B so as to face each other. A pair of substrate electric paths EP are provided between the first connector C1 and the second connector C2. According to this, the substrate electric path EP can be shortened. Therefore, the area occupied by the pair of substrate electric paths EP on the main surface of the substrate B can be reduced. As a result, the main surface of the substrate B can be effectively used.

A pair of substrate electric paths EP includes a plurality of electrical wirings EW printed on the main surface of the substrate B. As shown in FIG. A pair of substrate electric paths EP connect a pair of first pins P1 and a pair of second pins P2, respectively. Therefore, an electric signal can be transmitted to another circuit board CB via one circuit board CB using a pair of board electric paths EP. Specifically, as will be described later with reference to FIG. 3, the control unit CT utilizes a pair of substrate electric paths EP to connect the second circuit board CB (1) via the first circuit board CB (1). 2) can send electrical signals to.

Further, as shown in FIG. 1, another pair of substrate electric paths EPa are connected to another pair of first pins P1a and another pair of second pins P2a, respectively. Therefore, an electric signal can be transmitted to another circuit board CB via another pair of board electric lines EPa of one circuit board CB and a pair of board electric lines EP of another circuit board CB. More specifically, as will be described later with reference to FIG. 6, the control unit CT controls another pair of substrate electric paths EPa on the first circuit substrate CB(1) and a pair of substrate electric paths EPa on the second circuit substrate CB(2). Signals can be sent to the third circuit board CB(3) via the board traces EP.

FIG. 2 is a schematic plan view of the surface of the connection portion CN of the first embodiment.

As shown in FIG. 2, the connection CN can be connected to each of the two circuit boards CB. The connecting part CN is configured by an FFC (Flexible Flat Cable). In addition, in FIG. 2, only the wiring portion of the FFC is drawn from the viewpoint of the visibility of the drawing. Both ends of the connecting part CN are provided with one connector CX and the other connector CY. One connector CX and the other connector CY are connected to the first connector C1 and the second connector C2, respectively. Specifically, the CX of one connector is inserted along the surface of the substrate B into the recess of the first connector C1. The other connector CY is inserted along the surface of the substrate B into the recess of the second connector C2. The circuit board CB connection portion CN includes a pair of connection electric lines LP. The pair of connection electric lines LP can electrically connect one pair of second pins P2 of the two circuit boards CB and the other pair of circuit pins CP of the two circuit boards CB (see FIG. 3). .

The electrical device assembly part set of this embodiment includes a plurality of circuit boards CB shown in FIG. 1 and at least one connection portion CN shown in FIG. An assembly set of an electrical device in the present specification means a state of assembly in which each of a plurality of circuit boards CB and at least one connection part CN are individually separated but form a set. . According to this electric device assembly part set, the electric device, for example, a backlight BL of a liquid crystal display device to be described later (see FIGS. 3 and 6) can be changed only by increasing or decreasing the number of circuit boards CB and the number of connection portions CN. can be resized. That is, neither the pair of substrate electric lines EP nor the other pair of connection electric lines LPa need to be changed in order to change the size of the electrical device. Therefore, it is possible to easily change the size of the electrical device.

Furthermore, the connection portion CN includes another pair of connection electric lines LPa. Another pair of connection electric paths LPa can electrically connect another pair of second pins P2a of one circuit board CB and a pair of first pins P1 of another circuit board CB. More specifically, the other pair of connection electric paths LPa are, as will be described later using FIG. 6, the other pair of second pins P2a of the first circuit board CB(1) and (2) and the pair of first pins P1 can be electrically connected. Therefore, the three circuit boards CB can be electrically connected by the two connection portions CN.

In addition, the connection part CN can be connected to each of the two circuit boards CB in the longitudinal direction of the board B, specifically across the opposite long sides of the rectangular board B (FIGS. 3, 6). reference). Therefore, the plurality of substrates B are arranged so as to line up along the short side direction of the respective rectangles of the plurality of substrates B. As shown in FIG. As a result, compared to the case where a plurality of substrates B are arranged along the long side direction of the rectangle, adjustment of the overall size of the electric device, for example, the backlight BL (see FIGS. 3 and 6) is possible. variations can be increased.

In this embodiment, the first connector C1 and the second connector C2 have the same shape. Therefore, the connection portion CN can be connected to each of the first connector C1 and the second connector C2 without considering the orientation of the board B. FIG.

FIG. 3 is a schematic plan view of the surface of the backlight BL of the liquid crystal display device as an example of the electrical device of the first embodiment.

The backlight BL of the present embodiment includes two circuit boards CB consisting of a first circuit board CB(1) and a second circuit board CB(2), a connection portion CN, and a control portion CT. The configuration of each of the first circuit board CB(1) and the second circuit board CB(2) is the same as the configuration of the circuit board CB described using FIG. One connector CX and the other connector CY of the connecting portion CN are connected to the first circuit board CB(1) and the second circuit board CB(2), respectively. The connection portion CN(1) is a pair of pins electrically connecting the pair of second pins P2 of the first circuit board CB(1) and the pair of circuit pins CP of the second circuit board CB(2). It contains a connection line LP. The configuration of the connection portion CN is the same as the configuration described using FIG.

The control unit CT is connected to each of the pair of circuit pins CP and the pair of first pins P1 of the first circuit board CB(1) via electrical paths so as to be able to transmit electric signals. The control unit CT transmits a first signal for controlling the electric circuit EC of the first circuit board CB(1) via the pair of circuit pins CP of the first circuit board CB(1). The controller CT controls the pair of first pins P1, the pair of substrate electric paths EP, and the pair of second pins P2 of the first circuit board CB(1), and the pair of circuit pins of the second circuit board CB(2). Via CP, a second signal is sent to control the electrical circuit EC of the second circuit board CB(2). Therefore, the control unit CT can independently control the electric circuit EC of the first circuit board CB(1) and the electric circuit CB of the second circuit board CB(2). As a result, local dimming of the backlight BL can be performed.

Further, in the backlight BL of the present embodiment, the pair of substrate electric paths EP, the other pair of substrate electric paths EPa, the pair of connection electric paths LP, and the other pair of connection electric paths LPa are arranged so as to cross the long sides of the substrate. is provided in Therefore, compared to the case where a pair of substrate electric paths EP, another pair of substrate electric paths EPa, a pair of connection electric paths LP, and another pair of connection electric paths LPa are provided along the long side direction of the substrate B, the overall electric paths distance can be shortened.

In this embodiment, the first connectors C1 of the plurality of circuit boards CB have the same structure. Each second connector C2 of the plurality of circuit boards CB has the same structure. Each of the at least one connection portion CN has the same structure. Therefore, the plurality of circuit boards CB can be electrically connected by one or more connecting portions CN without considering the positional relationship of each of the plurality of circuit boards CB. Therefore, it is possible to easily assemble the backlight BL as an example of the electric device.

Further, the substrates B of the plurality of circuit substrates CB, the electric circuit EC including the plurality of light emitting elements L, and the pair of substrate electric paths EP have the same shape. Therefore, even if a plurality of circuit boards CB are connected by at least one connection portion CN without considering the positional relationship of each of the plurality of circuit boards CB, a backlight BL that emits light in a similar manner can be manufactured. . Therefore, the backlight BL can be manufactured easily.

(Embodiment 2)
A circuit board, an electrical device assembly part set, and an electrical device according to Embodiment 2 will be described with reference to the drawings. In the following description, the same description as in the first embodiment will not be repeated. This embodiment differs from the first embodiment in the following points.

FIG. 4 is a schematic plan view of the surface of the circuit board CB of the second embodiment.

As can be seen from FIG. 4, the circuit board CB of the present embodiment differs from the circuit board CB of the first embodiment in the shape and arrangement of each component, but the functions of each component are the same. . The plurality of light emitting elements L and the circuit wiring CW that constitute the electric circuit EC shown in FIG. are placed in However, in FIG. 4, the light-emitting elements on the right side of the above-described imaginary line among the plurality of light-emitting elements L are not denoted by reference numerals in order to make the drawing easier to see.

FIG. 5 is a schematic plan view of the connection portion CN of the second embodiment.

As can be seen from FIG. 5, in the connection portion CN of the present embodiment, compared with the connection portion CN of the first embodiment, the shape and arrangement of each component are substantially the same, and the function of each component is are identical. Also, as in FIG. 2, only the wiring of the FFC is drawn in FIG.

FIG. 6 is a schematic plan view of the backlight BL of the liquid crystal display device of Embodiment 2. FIG.

The configuration of the first circuit board CN(1), the first connection portion CN(1), and the second circuit board CB(2) of the backlight L of the present embodiment is similar to that of the backlight BL of the first embodiment. The configuration is basically the same as that of the first circuit board CN(1), the connecting portion CN, and the second circuit board CB(2). The backlight BL of the present embodiment further includes a second connection portion CN(2) and a third circuit board CB(3) in addition to the configuration of the backlight BL of the second embodiment. That is, the three circuit boards CB consisting of the first circuit board CB(1), the second circuit board CB(2) and the third circuit board CB(3) are connected to the first connection portion CN(1) and the second connection portion CN(1). are connected by two connections CN consisting of part CN(2).

More specifically, the pair of circuit pins CP of the first circuit board CB(1) and the electric circuit EC are electrically connected. Also, the pair of first pins P1, the pair of substrate electric paths EP, and the pair of second pins P2 of the first circuit board CB(1), and the pair of connection electric paths LP of the first connection portion CN(1) are: They are electrically connected in this order. Also, the pair of connection electric lines LP of the first connection portion CN(1) and the pair of circuit pins CP and electric circuit EC of the second circuit board CB(2) are electrically connected in this order.

Further, another pair of first pins P1a, another pair of board electric paths EPa, and another pair of second pins P2a of the first circuit board CB(1), and other than the first connection portion CN(1) are electrically connected in this order. Furthermore, another pair of connection electric lines LPa of the first connection portion CN(1), and a pair of first pins P1, a pair of board electric lines EP, and a pair of second pins of the second circuit board CB(2) P2 are electrically connected in that order. In addition, the pair of second pins P2 of the second circuit board CB(2), the pair of connection electric paths LP of the second connection part CN(1), and the circuit pins CP and electrical circuits of the third circuit board CB(3). Circuits EC are electrically connected in this order.

The control unit CT transmits a third signal to the electric circuit EC of the third circuit board CN(3). Specifically, first, the third signal is applied from another pair of first pins P1a, another pair of substrate electric paths EPa, and another pair of second pins P2a of the first circuit board CB(1) to the third pin P2a. It is transmitted to the other pair of connection electric lines LPa of one connection portion CN(1). Next, the third signal is supplied from the other pair of connection electric lines LPa of the first connection portion CN(1) to the pair of first pins P1 of the second circuit board CN(2), the pair of board electric lines EP, and the pair of electric lines EP. is transmitted to the pair of connection electric lines LP of the second connection portion CN via the second pin P2 of the second connection portion CN. Furthermore, the third signal is transmitted from the pair of connection electric paths LP of the second connection portion CN to the electric circuit EC of the third circuit board CN(3) via the circuit pins CP of the third circuit board CN(3). sent. Therefore, the control unit CT can independently transmit signals to the electric circuits EC of the first circuit board CB(1), the second circuit board CB(2), and the third circuit board CB(3). .

The circuit board CB, the assembly part set of the electrical device, and the electrical device of the present embodiment also provide the same effects as those obtained by the circuit board CB, the assembly part set of the electrical device, and the electrical device of the first embodiment. Obtainable.

(Embodiment 3)
A circuit board, an electrical device assembly part set, and an electrical device according to Embodiment 3 will be described with reference to the drawings. In the following description, the same description as in the second embodiment will not be repeated. This embodiment differs from the second embodiment in the following points.

FIG. 7 is a schematic plan view of the surface of the backlight BL of the liquid crystal display device as an example of the electrical device of the third embodiment. FIG. 8 is a schematic plan view of the back surface of the backlight BL of the liquid crystal display device as an example of the electrical device of the third embodiment.

As shown in FIG. 7, the backlight BL of the example of the electric device of the present embodiment has the same structure as the structure of the backlight BL of the example of the electric device of the second embodiment with respect to the surface. there is Further, as shown in FIG. 8, the backlight BL of the present embodiment has the configuration of the backlight BL of the second embodiment as well as a third connector C1 and a fourth connector C1 on the back side of the board B. A connector C4 and yet another pair of board traces EPR are provided. The third connector C3 includes a pair of third pins P3 separated from the surface electrical circuit EC. That is, the pair of third pins P3 are not connected to the electric circuit EC. The fourth connector C4 also includes a pair of fourth pins P4. A fourth connector C4 includes a pair of fourth pins P4 separated from the surface electrical circuit EC. A pair of fourth pins P4 are not connected to the electric circuit EC. Still another pair of substrate electric paths EPR are connected to a pair of third pins P3 and a pair of fourth pins P4. As can be seen from FIGS. 7 and 8, in the backlight BL of the present embodiment, in addition to the configuration of the backlight BL of the second embodiment, a fourth circuit board CN(4) and a third connection portion CN(3) ).

As can be seen from FIGS. 7 and 8, all circuit boards CB have the same structure. It has the same structure as all connections CN. The connector CY and the connector CX of the third connecting portion CN(3) are connected to the fourth connector C4 on the back surface of the first circuit board CB(1) and the first connector on the front surface of the fourth circuit board CB(4), respectively. connected to C1. The pair of connection electric paths LP of the third connection portion CN(3) are arranged in a direction different from the direction in which one connection portion CN extends on the surface side of the first circuit board CB(1). The fourth pin P4 and a pair of circuit pins CP of the fourth circuit board CB(4) are electrically connected.

The control unit CT controls the pair of third pins P3 of the third connector C3 of the first circuit board CB(1), the other pair of board electrical paths EPR, and the pair of fourth pins P4 of the fourth connector C4, and the third pin P4 of the fourth connector C4. A fourth signal is sent to the electrical circuit EC of the fourth circuit board CB(4) via the circuit pin CP of the fourth circuit board CB(4).

According to the above backlight BL, by using the third connector C3 and the fourth connector C4, in a direction different from the second circuit board CB (2) connected to the first connector C1 and the second connector C2, A fourth circuit board CB(4) is connected to the first circuit board (1). Therefore, variations in the shape of the backlight BL can be increased.

In this embodiment, the third connector C3 and the fourth connector C4 are provided on the back surface of the board B, but they are provided on the front surface of the board B similarly to the first connector C1 and the second connector C2. may have been

B board BL backlight C1 first connector C2 second connector C3 third connector C4 fourth connector CB circuit board CB(1) first circuit board CB(2) second circuit board CB(3) third circuit board CB( 4) Fourth circuit board CN connection part CN(1) first connection part CN(2) second connection part CN(3) third connection part CP pair of circuit pins CT control part EP pair of substrate electric paths EPa other pair substrate electric circuit EPR yet another pair of substrate electric circuits EC electric circuit L light emitting element LP pair of connection electric circuits LPa another pair of connection electric circuits P1 pair of first pins P2 pair of second pins P1a other pair of first pins P2a Other pair of second pins P3 Pair of third pins P4 Pair of fourth pins

Claims (14)

a substrate provided with an electric circuit;
a first connector including a pair of circuit pins connected to the electrical circuit and a first pair of pins separated from the electrical circuit;
a second connector including a pair of second pins;
a pair of substrate electric paths connecting the pair of first pins and the pair of second pins,
circuit board. The first connector further includes another pair of first pins,
The second connector further includes another pair of second pins,
further comprising another pair of substrate electric paths connecting the other pair of first pins and the other pair of second pins,
The circuit board according to claim 1. each of the first connector and the second connector has a shape extending along the longitudinal direction of the board;
the first connector and the second connector are arranged on the board so as to face each other;
The pair of board electric paths are provided between the first connector and the second connector,
3. The circuit board according to claim 1 or 2. a third connector including a pair of third pins separated from the electrical circuit;
a fourth connector including a pair of fourth pins;
a further pair of substrate electric paths connecting the pair of third pins and the pair of fourth pins,
The circuit board according to any one of claims 1-3. a first circuit board;
a second circuit board;
a first connection part that can be connected to the first circuit board and the second circuit board;
Each of the first circuit board and the second circuit board,
a substrate provided with an electric circuit;
a first connector including a pair of circuit pins connected to the electrical circuit and a first pair of pins separated from the electrical circuit;
a second connector including a pair of second pins;
a pair of substrate electric paths connecting the pair of first pins and the pair of second pins;
The first connection portion includes a pair of connection electric paths capable of electrically connecting the pair of second pins of the first circuit board and the pair of circuit pins of the second circuit board,
Assembly parts set for electrical equipment. The first connecting portion may be connected to the first circuit board and the second circuit board so as to traverse the longitudinal direction of the boards.
6. A set of assembly parts for an electrical device according to claim 5. The first connector further includes another pair of first pins,
The second connector further includes another pair of second pins,
each of the first circuit board and the second circuit board further includes another pair of substrate electric paths connecting the other pair of first pins and the other pair of second pins;
The first connection portion further includes another pair of connection electric paths capable of connecting the other pair of second pins of the first circuit board and the pair of first pins of the second circuit board,
A set of assembly parts for an electrical device according to claim 6. a third circuit board comprising said board identical to each of said first circuit board and said second circuit board, said first connector, said second connector, and said pair of board electrical paths;
a second connection portion including the same pair of connection electric paths as the first connection portion;
further comprising
Each of the first connection portion and the second connection portion further includes another pair of connection electric paths,
The other pair of connection electric paths of the second connection portion can be connected to the other pair of second pins of the second circuit board,
The other pair of second pins of the second circuit board are electrically connected to the pair of circuit pins of the third circuit board via the other pair of connection electric paths of the second connecting portion. obtain,
A set of assembly parts for an electrical device according to claim 7. a fourth circuit board comprising said board identical to each of said first circuit board and said second circuit board, said first connector, said second connector, and said pair of board electrical paths;
a third connection portion including the same pair of connection electric paths as the first connection portion;
further comprising
The first circuit board, the second circuit board, and the fourth circuit board, respectively,
a third connector further comprising a pair of third pins separated from the electrical circuit;
a fourth connector including a pair of fourth pins;
a further pair of substrate electric paths connecting the pair of third pins and the pair of fourth pins;
The third connecting portion can electrically connect the pair of fourth pins of the first circuit board and the circuit pins of the fourth circuit board,
An electrical device assembly part set according to any one of claims 5 to 8. a first circuit board;
a second circuit board;
a first connecting portion connected to the first circuit board and the second circuit board;
A control unit that controls the first circuit board and the second circuit board,
Each of the first circuit board and the second circuit board,
a substrate provided with an electric circuit;
a first connector including a pair of circuit pins connected to the electrical circuit and a first pair of pins separated from the electrical circuit;
a second connector including a pair of second pins;
a pair of substrate electric paths connecting the pair of first pins and the pair of second pins;
The first connection portion includes a pair of connection electric paths that electrically connect the pair of second pins of the first circuit board and the pair of circuit pins of the second circuit board,
The control unit
transmitting a first signal to control the electrical circuit of the first circuit board via the pair of circuit pins of the first circuit board;
The second circuit via the pair of first pins, the pair of substrate traces, and the pair of second pins of the first circuit board and the pair of circuit pins of the second circuit board. transmitting a second signal that controls the electrical circuit of the substrate;
electrical equipment. 11. The electrical device according to claim 10, wherein said pair of substrate electric paths and said pair of connection electric paths are provided across the longitudinal direction of said substrate. a third circuit board comprising said board identical to each of said first circuit board and said second circuit board, said first connector, said second connector, and said pair of board electrical paths;
a second connection portion including the same pair of connection electric paths as the first connection portion;
further comprising
Each of the first connection portion and the second connection portion further includes another pair of connection electric paths,
the other pair of connection electric paths of the second connection portion are connected to the other pair of second pins of the second circuit board;
The other pair of second pins of the second circuit board are electrically connected to the pair of circuit pins of the third circuit board via the other pair of connection electric paths of the second connecting portion. ,
The control section controls the other pair of first pins of the first circuit board, the other pair of board electric paths, the other pair of second pins, and the other pair of connections of the first connection section. electrical paths, the pair of first pins of the second circuit board, the pair of substrate electrical paths, and the pair of second pins, the pair of connecting electrical paths of the second connecting portion, and the circuit of the third circuit board. transmitting a third signal to the electrical circuitry of the third circuit board via a pin;
12. Electrical device according to claim 10 or 11. a fourth circuit board comprising said board identical to each of said first circuit board and said second circuit board, said first connector, said second connector, and said pair of board electrical paths;
a third connection portion including the same pair of connection electric paths as the first connection portion;
further comprising
The first circuit board, the second circuit board, and the fourth circuit board, respectively,
a third connector further comprising a pair of third pins separated from the electrical circuit;
a fourth connector including a pair of fourth pins;
a further pair of substrate electric paths connecting the pair of third pins and the pair of fourth pins;
the third connecting portion electrically connects the pair of fourth pins of the first circuit board and the circuit pins of the fourth circuit board;
The control unit controls the output via the pair of third pins of the first circuit board, the further pair of board electrical paths, the pair of fourth pins, and the circuit pins of the fourth circuit board. sending a fourth signal to the electrical circuit of the fourth circuit board;
An electrical device according to any of claims 10-12. The electric circuit includes a plurality of light emitting elements,
The electrical device according to any one of claims 10 to 13, functioning as a backlight for a liquid crystal display.

Images