JPH0113487Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power display device for a television that displays a power-on state.

Conventionally, there is a method in which a power lamp is turned on when the power is turned on in conjunction with a power switch, but if the high voltage protector were to operate, a problem would occur in which the screen would not appear even though the power lamp was on. There is also a method in which the lamp is connected to the secondary side of a transformer, particularly a flyback transformer, but if the lamp, which operates at low voltage, is forcibly incorporated into the secondary circuit of a flyback transformer that generates high voltage, many accessories are required. The problem was that the circuit became complicated and the cost increased.

However, the present invention is provided with a core that focuses the leakage magnetic flux of the flyback transformer and a lead wire that converts the leakage magnetic flux of the core into power for the power display pilot lamp.

Therefore, according to the present invention, it is possible to separately form a television power display circuit that uses the leakage magnetic flux of the transformer as a power source without directly obtaining power from the flyback transformer, and when the high voltage protector operates, the pilot lamp does not turn off. Not only does it light up without causing any problems like in the past, the circuit configuration on the secondary side of the transformer does not become complicated and does not increase costs, and since the leakage magnetic flux is used as a power source, there is no power consumption required for a pilot lamp. This enables accurate and economical display of the power supply of a television.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a flyback transformer, and around the core 3 of the transformer, the lead wire 4 of a power indicator pilot lamp 2 is wound in three turns, and a resistor 5 is interposed. 6 is an anode camp.

When the power is turned on and the flyback transformer operates, the pilot lamp 2 is lit by the leakage magnetic flux generated in the core 3 via the lead wire 4 wound around the core 3.

As is clear from the above embodiments, the present invention has a core 3 that focuses the leakage magnetic flux of the flyback transformer 1.
and a lead wire for converting the leakage magnetic flux of the core 3 into a power source for the pilot lamp 2 for power display. Since the power display circuit for the television used as the power source could be formed separately, when the high-voltage protector is activated, the pilot lamp 2 is turned off, preventing the conventional malfunction, and the circuit configuration on the secondary side of the transformer 1 is complicated. It is also remarkable that the power consumption of the pilot lamp 2 can be eliminated because the leakage magnetic flux is used as a power source, and the power display of the television can be displayed accurately and economically. be effective.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention and is an explanatory diagram showing the relationship between a flyback transformer and a power indicator lamp. 1...Flyback transformer, 2...Power indicator lamp (pilot lamp).

Claims (1)

[Scope of utility model registration request] A power display device for a television, characterized in that it is provided with a core 3 that focuses leakage magnetic flux of a flyback transformer 1, and a lead wire that converts the leakage magnetic flux of the core 3 into power for a power display pilot lamp 2.