JPH11307220A - Lightning discharge mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightning discharge mechanism which can withstand discharges that may be repeated in a discharge gap. SOLUTION: This lightning discharge mechanism has a discharge gap 7 for installing the mechanism in electronic equipment, for discharging the electric energy of lightning to ground. The lightning discharge mechanism has the discharge gap 7 formed by one end of a first jumper wire 9 and one end of a second jumper wire 10. The other ends of the first and second jumper wires 9, 10 are connected to copper patterns 3, 5 on a printed board 1 by solder 11, 12. The one end of each of the first and second jumper wires 9, 10 is not soldered to the printed board 1. Thus, even if discharges are repeated in the discharge gap, the lightning discharge mechanism can withstand the discharges.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightning discharge mechanism installed in electronic equipment. In particular, the present invention relates to a lightning discharge mechanism capable of withstanding a discharge even when the discharge is repeated in a discharge gap.

[0002]

2. Description of the Related Art In electronic devices such as televisions, noise having excessive energy due to lightning may enter from an antenna or an AC line. In this case, in order to protect the electronic device from danger such as ignition or smoking, a lightning discharge mechanism for safely discharging electric energy due to lightning to the ground is required. For this reason, electronic devices generally have this lightning discharge mechanism.

FIG. 2 is a plan view showing a conventional lightning discharge mechanism. A printed circuit board 101 is built in the electronic device, and first and second copper patterns 103 and 105 are formed on the printed circuit board 101. The first copper pattern 103 has a portion 103a having a pointed tip, and the second copper pattern 105 also has a portion 105a having a pointed tip. These pointed parts 1
Discharge gap 107 is formed by arranging 03a and 105a so as to face each other. This discharge gap 107 is a place where lightning should be discharged. still,
In general, the counter electrode forming the discharge gap 107 has a pointed shape, in order to surely generate a discharge in the discharge gap.

By arranging such a lightning discharge mechanism on the printed circuit board 101 in an electronic device, it is possible to safely discharge electric energy entering the electronic device due to a lightning strike to the ground.

[0005]

In the above-mentioned conventional lightning discharge mechanism, when a lightning discharge occurs in the discharge gap 107, the copper patterns 103 and 105 have insufficient strength against the lightning discharge. This causes the copper pattern to be damaged. In particular, when the discharge is repeated in the discharge gap, the copper pattern may be damaged. As a result, the sharpened portions 103a and 105a of the counter electrode forming the discharge gap 107 are formed.
May be deformed and rounded, and the discharge gap may be larger than initially. As a result, in some cases, the discharge gap does not have a discharge function, so that a lightning discharge may occur in a place other than the discharge gap.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lightning discharge mechanism capable of withstanding a discharge even if the discharge is repeated in a discharge gap.

[0007]

In order to solve the above-mentioned problems, a lightning discharge mechanism according to the present invention has a discharge gap for discharging electric energy due to lightning to the ground for installation in an electronic device. Wherein the discharge gap is formed by one end of a first jumper wire and one end of a second jumper wire.

In the above-mentioned lightning discharge mechanism, a lightning discharge is generated only at the front end of the jumper wire by forming a discharge gap at one end of the jumper wire having a sufficiently low resistance value and sufficient strength against lightning discharge. Can be done. Since the jumper wire at the tip of this gap is unlikely to change its shape due to the electric energy of lightning discharge, even if lightning strikes occur repeatedly and discharges occur repeatedly in the discharge gap, the electric energy of lightning can be safely discharged to the ground .

It is preferable that the other ends of the first and second jumper wires are connected to a copper pattern on a printed circuit board by soldering.

It is preferable that one end of each of the first and second jumper wires is not soldered to the printed circuit board. Thereby, discharge between copper patterns can be prevented, and discharge can be reliably performed between jumper wires.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A lightning discharge mechanism according to the present invention forms a discharge gap for safely discharging electric energy due to lightning to the ground in an electronic device provided with means for preventing damage when a lightning strike occurs. At this time, a jumper wire such as a tin-plated steel wire, which is a general mounted component, is disposed as a projection for discharge on the opposite side to be discharged. This makes it possible to prevent the discharge gap from deteriorating due to repeated discharge and improve the safety of the device.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a lightning discharge mechanism according to an embodiment of the present invention.

In an electronic device such as a television, when a lightning strike occurs, noise having excessive energy due to the lightning strike may enter the inside from an antenna or an AC line. In this case, in order to prevent damage to the electronic device due to this, a lightning discharge mechanism for safely discharging electric energy due to lightning to the ground is required. For this reason, electronic devices generally have this lightning discharge mechanism.

As shown in FIG. 1, this lightning discharge mechanism is provided on a printed circuit board 1 built in an electronic device. That is, the first and second
Copper patterns 3 and 5 are formed. One end of a first jumper wire 9 such as a tin-plated steel wire, which is a general mounted component, is connected to the first copper pattern 3 by solder 11. One end of a second jumper wire 10 such as a tin-plated steel wire is connected to the second copper pattern 5 by solder 12. By arranging the other ends of the first and second jumper wires 9 and 10 to face each other,
A discharge gap 7 is formed. That is, the first and second jumper wires 9 and 10 are arranged as discharge projections at the opposite electrodes to be discharged. This discharge gap 7 is a place where lightning should be discharged.

The other end of each of the first and second jumper wires 9 and 10 (ie, one end of the jumper wire to be discharged)
And the printed circuit board 1 are not soldered. In other words, the soldering lands are not provided on the jumper wires 9 and 10 on the discharge gap 7 side for discharging the electric energy due to lightning,
Only the jumper wires 9 and 10 on the opposite side are soldered. Holes 13 and 14 are formed in the printed circuit board 1 below the other ends of the jumper wires 9 and 10.

By arranging such a lightning discharge mechanism on the printed circuit board 1 in an electronic device, it is possible to safely discharge electric energy that enters the electronic device due to a lightning strike to the ground.

According to the above-described embodiment, one end of each of the first and second jumper wires 9 and 10 having a sufficiently low resistance value and sufficient strength against lightning discharge forms a discharge gap 7, and Is generated only at the opposite end of the jumper wire. Since the jumper wire at the tip of this gap is unlikely to change its shape due to the electric energy of lightning discharge, even if lightning strikes occur repeatedly and discharges occur repeatedly in the discharge gap 7, the electric energy of lightning can be safely discharged to the ground. It becomes possible.

Further, one ends of the jumper wires 9 and 10 to be discharged are not soldered to the printed circuit board 1. Therefore, discharge between copper patterns can be prevented, and discharge can be reliably generated between jumper wires.

Further, since the jumper wire is used to form the discharge gap, the safety of the electronic device can be improved at low cost.

In the above-described embodiment, the discharge gap 7 is formed by one end of the jumper wire 9 or 10 made of tin plating or the like. However, the present invention is not limited to this.
It is also possible to form the discharge gap with another metal made of a material and a shape that does not cause a shape change due to the electrical energy of the lightning strike.

[0021]

As described above, according to the present invention, there is provided a lightning discharge mechanism having a discharge gap for discharging electric energy due to lightning to the ground for installation in an electronic device. The discharge gap is formed by one end of the first jumper wire and one end of the second jumper wire. Therefore, even if the discharge is repeated in the discharge gap, a lightning discharge mechanism capable of withstanding the discharge can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing a lightning discharge mechanism according to an embodiment of the present invention.

FIG. 2 is a plan view showing a conventional lightning discharge mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Printed circuit board, 3 ... 1st copper pattern, 5 ... 2nd copper pattern, 7 ... Discharge gap, 9 ... 1st jumper wire, 10 ... 2nd jumper wire, 11 and 12 ... Solder, 1
3, 14 ... holes, 101 ... printed circuit board, 103 ... first copper pattern, 103a ... portion of the first copper pattern with a sharp tip, 105 ... second copper pattern, 105a ...
The tip of the second copper pattern having a pointed shape, 107 ...
Discharge gap.

Claims (3)

[Claims] 1. A lightning discharge mechanism having a discharge gap for discharging electric energy due to lightning to the ground for installation in an electronic device, wherein the discharge gap is connected to one end of a first jumper wire and a second end of a second jumper wire. A lightning discharge mechanism formed by one end of a jumper wire. 2. The lightning discharge mechanism according to claim 1, wherein the other end of each of the first and second jumper wires is connected to a copper pattern on a printed circuit board by soldering. 3. The lightning discharge mechanism according to claim 2, wherein one end of each of the first and second jumper wires is not soldered to the printed circuit board.