JP2006254256A - Structure for preventing heating part mounted on board from falling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively utilize a board space by achieving a high density of parts mounting including a heating part, and to promote the miniaturization of a wiring board without adding an extra part and without changing an existing parts layout. <P>SOLUTION: The wiring board 1 mounting a thermistor 2 as the heating part, a non-heating part 5, and a connector 3 all together is provided with a primary-side power supply circuit to connect the connector 3 and the thermistor 2, and a secondary-side power supply circuit to connect the non-heating part 5. A hook 62 to prevent the fall of the thermistor 2 by connecting to the thermistor 2 is integrated to a socket 6 installed in the connector 3. A demagnetization coil 61 is connected to the socket 6. The hook 62 holds the thermistor 2 through an operation to install the socket 6 in the connector 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure for preventing falling of a board-mounted heat generating component, for example, a wiring board in which a heat generating component such as a thermistor and a non-heat generating component such as an electrolytic capacitor are arranged close to each other, such as a wiring substrate used in a television receiver. The present invention relates to a structure for preventing the fall of a board-mounted heat-generating component as a measure for preventing the occurrence of a situation in which a heat-generating component falls to a non-heat-generating component and impairs component performance.

  In a wiring board on which a heat generating component such as a thermistor or a non-heat generating component such as an electrolytic capacitor is mounted, the mounting density is increased by devising the layout of each component, and the wiring substrate is reduced in size.

  FIG. 3 illustrates, as an example of this type of wiring board, a wiring board 1 for a television receiver having a primary power circuit and a secondary power circuit and having various electronic components mounted thereon. . In the figure, 2 is a thermistor as a heat generating component, 3 is a connector, 4 and 5 are non-heat generating components, and a socket 6 to which a demagnetizing coil 61 is connected is mounted on the connector 3. The thermistor 2, the connector 3, and the non-heat generating component 4 are connected to the primary power supply circuit formed on the wiring board 1, whereas the non-heat generating component 5 is the secondary side formed on the wiring board 1. Connected to the power circuit.

  In such a wiring board 1, a socket 6 to which a demagnetizing coil 61 is connected is attached to the connector 3, and the thermistor 2 is an element that controls the electromagnetic action of the demagnetizing coil 61. Considering that the connector 3 and the thermistor 2 are connected to the circuit, it is beneficial to increase the mounting density because the connector 3 and the thermistor 2 are adjacent to each other in terms of the layout on the wiring board 1. 3 and the thermistor 2 are arranged adjacent to each other as shown.

  On the other hand, the thermistor 2 has a function of changing the electric resistance value by generating heat when the power is turned on. Therefore, in order to prevent the influence of the generated heat from reaching the wiring board 1, the thermistor 2 is in a standing posture through the lead pins 21. It is mounted on the wiring board 1. And, in the relationship with the non-heat generating component 5 connected to the secondary side power supply circuit, even if the lead pin 21 is bent and the thermistor 2 falls to the non-heat generating component 5 side as shown by the phantom line in FIG. The heat generation of the thermistor 2 that has fallen to the non-heat-generating component 5 side ensures non-heat generation so that a creepage distance of a certain length or more (for example, 3 mm or more) is secured between the non-heat-generating component 5 that is a secondary-side component. It is required to consider that the component 5 is not adversely affected.

  However, as shown in FIG. 3, when a relatively wide space is secured between the thermistor 2 and the non-heat generating component 5 as the secondary side component to secure the creeping distance, the space is reduced in size. It becomes an obstacle to plan. Therefore, for example, as shown in FIG. 4, the thermistor 2 as the primary part and the non-heat generating component 5 ′ as the secondary part are arranged close to each other, and a standing substrate 7 is installed between the two, thereby wiring. In some cases, the size of the substrate 1 is reduced and the thermistor 2 is prevented from falling to the non-heat-generating component 5 'side.

On the other hand, conventionally, various proposals have been made for measures for preventing the electrolytic capacitor or the like from falling down in connection with high-density mounting of electronic components on a wiring board (for example, Patent Document 1, Patent Document 2, Patent). Reference 3). In addition, proposals for means for fixing electronic components to an electronic circuit board in a stationary state (see, for example, Patent Document 4), proposals regarding a connector removal prevention mechanism (for example, see Patent Document 5), and the like have also been proposed.
Japanese Utility Model Publication No. 11-261258 JP 2000-216562 A Japanese Utility Model Publication No. 49-17939 Japanese Patent Laid-Open No. 10-233566 Japanese Patent Laid-Open No. 11-67334

  However, in the countermeasure for preventing the thermistor 2 from falling by the standing substrate 7 as described with reference to FIG. 4, there is a problem in that the standing substrate 7 is additionally required and the assembling cost is increased.

  Moreover, since the countermeasure proposed by patent document 1, patent document 2, or patent document 3 uses an extra resin rod, a metal plate, a holding band, etc., the resin rod etc. also by these countermeasures. There is a problem that it is necessary extra.

  The present invention has been made in view of the above problems, and it is possible to prevent a heat-generating component such as a thermistor from collapsing without adding extra components, and a wiring board by increasing the density of component mounting. An object of the present invention is to provide a structure for preventing the fall of a board-mounted heat generating component that can promote the reduction in size of the board.

  The fall prevention structure of the board mounted heat generating component according to the present invention is a fall prevention structure of the heat generating component mounted on the wiring board in which the heat generating component, the non-heat generating component, and the connector to which the socket is mounted are mounted, A non-heat-generating component and a connector are arranged on both sides sandwiching the heat-generating component, and a hook is attached to the connector that prevents the heat-generating component from falling to the non-heat-generating component by engaging with the heat-generating component. The socket is integrally formed.

  In this configuration, the hook that prevents the heat-generating component from falling to the non-heat-generating component by engaging with the heat-generating component is formed integrally with the socket attached to the connector. It is possible to prevent the heat generating component from falling to the non-heat generating component without adding. For this reason, it is possible to increase the density of component mounting by arranging the heat-generating component and the non-heat-generating component close to each other, thereby promoting the downsizing of the wiring board. In addition, there is an advantage that it is possible to adopt a configuration in which the hook is engaged with the heat generating component through an operation of attaching the socket to the connector. For this advantage, an operation for engaging the hook with the heat generating component is separately performed. There is also an advantage that it is possible to eliminate the necessity of doing so and to avoid complication of assembling workability.

  In the present invention, a non-heat-generating component is disposed on the opposite side of the connector with the heat-generating component interposed therebetween, and another non-heat-generating component is additionally disposed on the opposite side of the heat-generating component with the connector interposed therebetween. It is possible to adopt a configuration in which the socket mounted on the connector is used as a partition member that receives a component and prevents the heat generating component from falling to the other non-heat generating component. According to this, the heat generating component is disposed between the hook and the socket as the partition member, and the both prevent the heat generating component from falling down.

  In the present invention, the wiring board includes a primary power supply circuit connected to the connector and the heat generating component, and a secondary power supply circuit connected to the non-heat generating component arranged on the opposite side of the connector across the heat generating component. It is possible to adopt a configuration of having This configuration is particularly useful for preventing the heat-generating component such as the thermistor mounted on the television receiver wiring board described above from falling down.

  In the present invention, the heat generating component may be a thermistor mounted on the wiring board in a standing posture through the lead pins. Further, a demagnetizing coil may be connected to the socket, and the socket may be integrally formed with the hook with a flame retardant resin. These configurations can also be publicly applied to the television receiver wiring board described at the beginning.

  The fall prevention structure of the board mounted heat generating component according to the present invention is a fall prevention structure of the heat generating component mounted on the wiring board in which the heat generating component, the non-heat generating component, and the connector to which the socket is mounted are mounted, A television, wherein the wiring board includes a primary power circuit connected to the connector and the heat generating component, and a secondary power circuit connected to the non-heat generating component disposed on the opposite side of the connector across the heat generating component. A thermistor mounted on the wiring board in a standing posture through a lead pin, the demagnetizing coil being connected to the socket, and a non-depositing coil on the opposite side of the connector across the thermistor. A heat-generating component is placed, and another non-heat-generating component is added on the opposite side of the thermistor across the connector, and the thermistor is received. The socket attached to the connector is used as a partition member made of a flame retardant resin that prevents the thermistor from falling to the other non-heat-generating component side, and the thermistor is engaged with the thermistor by engaging the thermistor. The hook is further embodied by adopting a configuration in which a hook that is prevented from falling to the non-heat-generating component side disposed on the opposite side of the connector is integrally formed with the socket mounted on the connector. The The operation of the present invention will be described in detail with reference to the embodiments described later.

  As described above, according to the fall prevention structure for a board mounted heat generating component according to the present invention, a hook as a counterpart component of a connector arranged adjacent to a heat generating component such as a thermistor is provided and heat is generated by the hook. Since the parts are engaged to prevent the heat generating parts from falling down, the board space can be increased by increasing the density of parts mounting without adding extra parts and changing the existing part layout. Therefore, it is possible to promote the reduction of the size of the wiring board, and to provide a user with a small and highly safe television receiver at low cost.

  FIG. 1 is a partially cutaway side view of a fall-preventing structure for a substrate mounted heat generating component according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view of a socket 6 and the like.

  A wiring board 1 shown in FIG. 1 is a wiring board used in an AV multifunction device such as a video integrated television receiver and a DVD integrated television receiver. In the same manner as described with reference to FIG. 3, the thermistor 2, the connector 3, the non-heat generating components 4, 5, etc. are mounted on the wiring board 1, and the demagnetizing coil 61 is connected to the connector 3. A socket 6 is attached. The thermistor 2, the connector 3, and the non-heat generating component 4 are connected to the primary power supply circuit formed on the wiring board 1, whereas the non-heat generating component 5 is the secondary side formed on the wiring board 1. Connected to the power circuit. Further, the mounting density on the wiring substrate 1 is increased by arranging the connector 3 and the thermistor 2 adjacent to each other, and the thermistor 2 is a non-heat generating component that is a secondary side component compared to the case of FIG. The mounting density is further increased by arranging the components 5 close to each other.

  In this embodiment, by using the socket 6 as a partition member, the thermistor 2 is received and the thermistor 2 is prevented from falling to the non-heat generating component 4 side which is the primary side component. And in order to ensure the heat resistance and flame retardance which are requested | required of such a partition member, the socket 6 is shape | molded with the flame-retardant resin. Further, a hook 62 is integrally formed on the socket 6, and by engaging the hook 62 with the thermistor 2, the thermistor 2 is prevented from falling to the non-heat generating component 5 side which is a secondary side component. It is.

  With this configuration, the thermistor 2 mounted in an upright position on the wiring board 1 via the lead pins 21 is disposed between the engagement piece 63 of the hook 62 and the socket 6, and the thermistor 2 falls down by both of them. Is blocked. That is, the thermistor 2 is prevented from falling to the non-heat generating component 5 side which is the secondary side component by the engagement piece 63 of the hook 62, whereas the thermistor 2 is moved to the non-heat generating component 4 side which is the primary side component. When it falls down, the thermistor 2 is received by the socket 6 as shown by the phantom line in FIG. 1 and is prevented from approaching the non-heat generating component 4. Therefore, the lead pin 21 is bent and the thermistor 2 falls to the non-heat generating component 5 side which is a secondary side component, and the adverse effect due to the heat generation reaches the non-heat generating component 5, or the non-heat generating component where the thermistor 2 is a primary side component. There is no room for occurrence of a situation in which the non-heat-generating component 4 is adversely affected by the heat generation by falling to the side 4. Moreover, as described above, the mounting density on the wiring board 1 is increased by arranging the connector 3 and the thermistor 2 adjacent to each other, and the thermistor 2 is more secondary than the case of FIG. Since the mounting density is further increased by being arranged close to the non-heat-generating component 5 that is the side component, the space of the wiring board 1 is effectively utilized to reduce the size.

  In this embodiment, since the hook 62 is integrally formed with the socket 6 from a flame-retardant resin, there is an advantage that providing the hook 62 does not lead to an increase in the number of parts. In this embodiment, as shown in FIG. 2, the hook 62 is integrally formed on the socket 6 to be inserted and attached to the connector 3 by being pushed down from above as indicated by the arrow D, and the socket 6 is attached to the connector 3. Through this operation, the hook 62 presses down the thermistor 2 so that the engaging piece 63 faces the back surface of the thermistor 2. For this reason, there is an advantage in the assembling surface that it is not necessary to perform a special operation for engaging the hook 62 with the thermistor 2.

  The non-heat-generating parts 4 and 5 described above include, for example, electrolytic capacitors and other parts that do not generate heat.

It is a partially broken side view of the fall prevention structure of the board mounted heat generating component according to the embodiment of the present invention. It is a schematic perspective view of a socket or the like. It is the partially broken side view which illustrated the wiring board for television receivers. It is a partially broken side view of the fall prevention structure of the board mounted heat generating component using the standing board.

Explanation of symbols

1 Wiring board 2 Thermistor (heat generating component)
3 Connector 4, 5 Non-heating part 6 Socket 21 Lead pin 61 Demagnetizing coil 62 Hook

Claims (6)

A structure for preventing the heat-generating component from collapsing mounted on a wiring board on which a heat-generating component, a non-heat-generating component, and a connector on which a socket is mounted is mounted.
A television including the wiring board including a primary power circuit connected to the connector and the heat generating component, and a secondary power circuit connected to the non-heat generating component disposed on the opposite side of the connector across the heat generating component. A substrate for a receiver,
The heat generating component is a thermistor mounted on a wiring board in a standing posture through a lead pin, and a demagnetizing coil is connected to the socket,
A non-heat-generating component is disposed on the opposite side of the connector across the thermistor, and another non-heat-generating component is additionally disposed on the opposite side of the thermistor across the connector. The socket mounted on the connector is used as a partition member made of a flame retardant resin that prevents the thermistor from falling to the other non-heat-generating component, and the thermistor attaches the thermistor by engaging with the thermistor. A structure for preventing falling of a board mounted heat generating component, wherein a hook for preventing the pin from falling to the non-heat generating component side disposed on the opposite side of the connector is integrally formed with the socket mounted on the connector. . A structure for preventing the heat-generating component from collapsing mounted on a wiring board on which a heat-generating component, a non-heat-generating component, and a connector on which a socket is mounted is mounted.
A non-heat-generating component and a connector are arranged on both sides sandwiching the heat-generating component, and a hook that prevents the heat-generating component from falling to the non-heat-generating component by engaging with the heat-generating component is attached to the connector. A structure for preventing falling of a board-mounted heat generating component formed integrally with the socket. A non-heat-generating component is placed on the opposite side of the connector across the heat-generating component, and another non-heat-generating component is additionally placed on the opposite side of the heat-generating component across the connector. The structure for preventing a board-mounted heat-generating component from collapsing according to claim 2, wherein the socket mounted on the connector is used as a partition member that prevents the heat-generating component from collapsing to the other non-heat-generating component. The wiring board has a primary power circuit connected to the connector and the heat generating component, and a secondary power circuit connected to the non-heat generating component arranged on the opposite side of the connector across the heat generating component. The structure for preventing the board-mounted heat generating component from collapsing according to claim 2 or claim 3. 5. The structure for preventing falling of a board-mounted heat generating component according to claim 4, wherein the heat generating component is a thermistor mounted on a wiring board in a standing posture through a lead pin. 6. The structure for preventing overturning of a board-mounted heat-generating component according to claim 5, wherein a demagnetizing coil is connected to the socket, and the socket is integrally formed with the hook with a flame-retardant resin.

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