KR970068523A - Mood lighting device in video display device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mood lighting apparatus in an image display apparatus, and in general, an image display apparatus is a device for outputting an image on a screen such as a television receiver or a monitor. When the drama is watched, the difference between the brightness of the screen and the brightness of the surrounding lighting increases, which causes the viewer's eyes to bloom.

In order to solve the above problems, according to the present invention, a lamp is installed on the rear surface of a video display device, and when the mood lighting mode is set, the brightness of the lamp is automatically controlled according to the screen brightness of the video display device, A mood illumination device for a video image display device that can reduce a viewer's glare due to a difference in brightness between a surrounding light and a screen when viewing an image in a state, and can also produce a theater atmosphere.

Description

Mood lighting device in video display device

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FIG. 1 is a circuit diagram showing a TV to which the mood lighting device of the present invention is applied, FIG. 2 is a side view showing a TV to which the mood lighting device of the present invention is applied.

Claims (2)

1. A video display device comprising: a flyback transformer (FBT) for outputting a beam current; and a CRT (1) for outputting an image on the basis of a beam current generated from the flyback transformer (FBT) A control unit 2 for outputting a control signal for implementing a mood lighting function when a key is input and a power supply Vcc for driving the lamp L by being turned on by a control signal outputted from the control unit 2 A brightness controller 3 for varying a power supply Vcc supplied to the lamp L by a switching operation of the switching device SCR according to the brightness of an image outputted to a video display device, And a plurality of lamps (L) whose brightness is varied by a voltage input variably under the control of the brightness controller (3). The light emitting device according to claim 1, wherein the brightness controller (3) comprises resistors (R1, R2) for detecting beam current supplied from the flyback transformer (FBT) to the CRT A transistor Q3 for outputting a voltage proportional to the voltage output from the transistor Q3; a transistor Q4 for outputting a voltage value from the transistor Q4; And a transistor (Q5) for variably controlling the voltage supplied from the switching element (SCR) to the lamp (L) in accordance with the control signal. ※ Note: It is disclosed by the contents of the first application.