JP2011228152A - Heat dissipation structure of terminal block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that heat dissipation of circuit elements is not performed quickly because airflow is obstructed by a terminal block on a circuit board.SOLUTION: In a terminal block 100, terminals 1 are provided on the upper surface of a housing 2, the housing 2 is mounted on a circuit board 8, and terminal lines 5 of the terminal 1 are connected to the circuit board 8. The housing 2 comprises: a first surface including terminal line cover parts 4 for covering the terminal lines 5 and slit-shaped openings 3 each provided between the terminal line cover parts 4; and a second surface that is opposite the first surface and that is fully opened.

Description

  The present invention relates to a terminal plate including terminals, and more particularly to a heat dissipation structure for the terminal plate.

  In recent years, component mounting density has increased due to the reduction in board size in products such as television receivers, and due to the influence of large parts such as terminal boards, ventilation cannot be secured sufficiently, and large heat sinks are required, resulting in cost. Has also been affected.

  FIG. 12A is a perspective view of a conventional terminal board 300 as viewed from the front, and FIG. 12B is a perspective view as viewed from the back.

  A conventional terminal board 300 includes a plurality of terminals 1, a housing 22 having a plurality of terminals 1 on its upper surface, and a terminal wire 25 of the terminal 1 provided on the front surface of the housing 22 and having an end portion exposed from the lower surface of the housing 22. (Signal line or ground line) and locking claw 9. The terminal plate 300 is attached by fitting and locking the locking claw 9 on a circuit board (not shown), and is fixed to the circuit board by inserting the terminal wires 25 into the circuit board and soldering the ends thereof. Is done.

  FIG. 13 is a view showing the air flow when the conventional terminal board 300 is installed on the circuit board 8.

  On the circuit board 8, the terminal board 300 and the circuit element 7 are installed around the terminal board 300. With the circuit board 8 attached to a product such as a television receiver, the terminal board 300 is a circuit. It is installed so as to be below the element 7. Thus, the air flow 20 when the terminal board 300 and the circuit element 7 are installed is shown.

JP-A-10-79278

  As shown in FIG. 13, since the circuit board 8 is installed perpendicularly to the ground, high temperature air passes from the bottom to the top. At that time, ventilation is hindered by the terminal board 300, and the circuit element 7 is not radiated quickly. For this reason, it is necessary to attach a heat radiating plate (not shown) to the circuit element 7 to promote heat dissipation, which greatly affects the cost.

  A terminal plate according to the present invention is a terminal plate which is provided with a terminal on an upper surface of a housing, attaches the housing to a circuit board, and connects the terminal wire of the terminal to the circuit board. The housing covers the terminal wire. A first surface comprising a terminal wire cover portion and a slit-shaped opening provided between the terminal wire cover portions; a second surface opposed to the first surface; the entire surface being opened; It is characterized by comprising.

  According to the terminal plate according to the present invention, the terminal plate housing is provided with the first surface having the slit-shaped opening and the second surface facing the first surface and having the entire surface opened. It is possible to speed up the air flow and improve the heat dissipation effect of the circuit elements arranged around the terminal board.

  The terminal plate according to the present invention is a terminal plate in which a terminal is provided on the upper surface of the housing, the housing is attached to the circuit board, and the terminal wire of the terminal is connected to the circuit board. The first surface formed, the second surface facing the first surface, the entire surface being opened, and the terminal wire are covered, and are integrally formed perpendicular to the first surface and the second surface. And a third surface.

  In the terminal plate according to the present invention, the housing further covers the terminal wire, opposes the third surface, and is integrally formed perpendicularly to the first surface and the second surface. It is characterized by comprising four surfaces.

  According to the terminal plate according to the present invention, the housing of the terminal plate is provided with the first surface having the entire surface opened, and the second surface having the entire surface opened opposite to the first surface. It becomes possible to make the flow quicker and to improve the heat dissipation effect of the circuit elements and the like arranged around the terminal board.

  According to the terminal plate according to the present invention, the terminal plate housing is provided with the first surface having the slit-shaped opening and the second surface facing the first surface and having the entire surface opened. It is possible to speed up the air flow and improve the heat dissipation effect of the circuit elements arranged around the terminal board.

  Further, according to the terminal plate according to the present invention, the terminal plate housing is provided with the first surface having the entire surface opened and the second surface having the entire surface opened facing the first surface. It becomes possible to make the air flow quicker and to improve the heat radiation effect of the circuit elements and the like arranged around the terminal board.

(A) The perspective view seen from the front of the terminal board concerning Example 1 of this invention (b) The perspective view seen from the back The top view of the terminal board concerning Example 1 of the present invention. The front view of the terminal board concerning Example 1 of this invention. The rear view of the terminal board concerning Example 1 of this invention (A) Right side view (b) Left side view of a terminal board according to Embodiment 1 of the present invention. The perspective view seen from the front of the terminal board concerning Example 2 of the present invention. The top view of the terminal board concerning Example 2 of this invention. The front view of the terminal board concerning Example 2 of this invention The rear view of the terminal board concerning Example 2 of this invention (A) Right side view (b) Left side view of a terminal board according to Example 2 of the present invention. The figure which shows the flow of the air at the time of installing the terminal board concerning Example 1 and Example 2 of this invention on a circuit board. (A) Perspective view of a conventional terminal board as viewed from the front side (b) Perspective view from the back side The figure which shows the flow of air when installing the conventional terminal board on the circuit board

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 to 5 are each a diagram of a terminal board 100 according to a first embodiment of the present invention.

  1A is a perspective view of the terminal board 100 as viewed from the front side, FIG. 2B is a perspective view of the terminal board 100 as viewed from the back side, FIG. 2 is a top view of the terminal board 100, FIG. 3 is a front view of the terminal board 100, FIG. FIG. 5 is a rear view of the terminal board 100, and FIG. 5 is a (a) right side view and (b) left side view of the terminal board 100.

  The terminal 1 is a pin jack that takes in an external video signal, audio signal, luminance signal, and color difference signal onto a circuit board (not shown), and a plurality (multiple rows, multiple columns) are arranged on the upper surface of the housing 2. Has been.

  The housing 2 is made of resin, and a plurality of terminals (a plurality of rows and a plurality of columns) are arranged on the upper surface of the housing 2 and attached to a circuit board (not shown). The housing 2 has a part of the front surface and the entire back surface opened, and the side surface is not opened. The front surface of the housing 2 is composed of a front opening 3 and a terminal wire cover 4, and is arranged in a plurality of portions alternately so as to be opened in a slit shape so that air can be taken in and out from the outside. It has become. The rear surface of the housing 2 is composed of a rear opening 6, and has a structure that allows intake and exhaust of air to and from the outside, like the front surface of the housing 2.

  The terminal line 5 of the terminal 1 connects a signal line that takes in an external video signal, audio signal, luminance signal, and color difference signal to the circuit board, or a ground on the circuit board and a ground of each signal that takes in from the outside. Ground line. The terminal wires 5 are provided on the front surface of the housing 2 at a predetermined interval as a bundle of a plurality of terminal wires 5 and are covered with the terminal wire cover portion 4 of the housing 2 so that the end portions are exposed from below the housing 2. . The terminal board 100 is fixed to the circuit board by being soldered in a state where the end portion of the terminal wire 5 of the housing 2 is inserted into the circuit board.

  The circuit element 7 is an element for processing a signal taken from the outside. A plurality of circuit elements 7 are installed on the circuit board, and it is necessary for the circuit element 7 to generate heat during operation to take measures against heat dissipation. This is a major factor.

  FIG. 11 is a diagram illustrating the air flow when the terminal board 100 according to the first embodiment of the present invention is installed on the circuit board 8. On the circuit board 8, the terminal board 100 and the circuit element 7 are installed around the terminal board 100. With the circuit board 8 attached to a product such as a television receiver, the terminal board 100 is a circuit. It is installed so as to be below the element 7. Thus, the air flow 10 when the terminal board 100 and the circuit element 7 are installed is shown. As shown by the air flow 10, high-temperature air can flow quickly from bottom to top through the front opening 3 through the back opening 6 without being blocked by the terminal board 100. It becomes. In addition, since the side surface of the terminal board 100 is not opened, the flow from the bottom of the high temperature air to the top is not hindered.

  As described above, according to the terminal plate according to the present invention, the housing of the terminal plate is provided with the first surface having the slit-shaped opening and the second surface facing the first surface and having the entire surface opened. As a result, it is possible to speed up the air flow and improve the heat dissipation effect of the circuit elements and the like arranged around the terminal board.

  6 to 10 are views of the terminal board 200 according to the second embodiment of the present invention.

  6 is a perspective view seen from the front of the terminal board 200, FIG. 7 is a top view of the terminal board 200, FIG. 8 is a front view of the terminal board 200, FIG. 9 is a rear view of the terminal board 200, and FIG. (A) Right side view (b) Left side view.

  The terminal plate 200 according to the second embodiment of the present invention is different from the terminal plate 100 according to the first embodiment in that the front surface of the housing 12 is provided with a front opening 13 that is opened on the entire surface, and the terminal wire 15 of the terminal 1. Is provided on both side surfaces of the housing 12.

  FIG. 11 is a diagram illustrating the air flow when the terminal board 200 according to the second embodiment of the present invention is installed on the circuit board 8. On the circuit board 8, the circuit element 7 is installed around the terminal board 200. With the circuit board 8 attached to a product such as a television receiver, the terminal board 200 is located below the circuit element 7. It is installed to come. Thus, the air flow 10 when the terminal board 200 and the circuit element 7 are installed is shown. As shown by the air flow 10, high-temperature air can flow quickly from bottom to top through the front opening 13 through the back opening 6 without being blocked by the terminal board 200. It becomes. Since the front opening 13 is entirely open on the front surface of the housing 12, the terminal board 200 has a faster air flow than the terminal board 100 according to the first embodiment, and the circuit elements arranged around the terminal board 200. It becomes possible to make the heat dissipation effect of 7 etc. better. In addition, since the side surface of the terminal board 200 is not opened, the flow from the bottom to the top of high-temperature air is not hindered.

  As described above, according to the terminal plate according to the present invention, the housing of the terminal plate is provided with the first surface with the entire surface opened and the second surface with the entire surface opened facing the first surface. It becomes possible to make the air flow quicker and to improve the heat radiation effect of the circuit elements and the like arranged around the terminal board.

  In the present embodiment, the terminal plate 200 is provided with the terminal wires 15 of the terminal 1 on both side surfaces of the housing 12, but the terminal wires 15 may be provided only on one side surface of the housing 12.

  Of the four sides of the terminal board 200 where the terminal board 200 and the circuit board 8 are in contact, the terminal wires 15 on both sides are inserted into the circuit board 8 and fixed by soldering to the circuit board 8 of the terminal board 200. As a result, the mounting claw 9 provided in the conventional terminal board 300 and a mounting hole (not shown) for mounting the locking claw 9 on the circuit board 8 are not required, thereby reducing costs and manufacturing processes. It is also possible to obtain an effect.

  The present invention provides a terminal plate housing with a first surface having a slit-shaped opening and a second surface facing the first surface and having an entire surface opened, thereby speeding up air flow. Since it becomes possible to improve the heat dissipation effect of the circuit elements arranged around the terminal board, it is useful as a heat dissipation structure for the terminal board.

DESCRIPTION OF SYMBOLS 1 Terminal 2, 12, 22 Housing 3, 13 Front opening part 4 Terminal line cover part 5, 15, 25 Terminal line 6 Rear opening part 7 Circuit element 8 Circuit board 9 Locking claw 10, 20 Air flow 100, 200, 300 Terminal board

Claims (3)

A terminal plate for providing a terminal on the upper surface of the housing, attaching the housing to the circuit board, and connecting a terminal wire of the terminal to the circuit board,
The housing is
A first surface comprising a terminal wire cover portion covering the terminal wire, and a slit-shaped opening provided between the terminal wire cover portions;
A terminal board comprising: a second surface facing the first surface and having an entire surface opened. A terminal plate for providing a terminal on the upper surface of the housing, attaching the housing to the circuit board, and connecting a terminal wire of the terminal to the circuit board,
The housing is
A first surface that is fully open;
A second surface facing the first surface and having an entire surface opened;
A terminal plate comprising: a third surface that covers the terminal wire and is integrally formed perpendicular to the first surface and the second surface. The housing further includes:
3. The fourth surface which covers the terminal wire, opposes the third surface, and is integrally formed perpendicularly to the first surface and the second surface. Terminal board.

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