KR20000008872U - Power saving mode display device using optical fiber - Google Patents

Abstract

The disclosed invention connects one end of the optical fiber to the front side of the LED installed in the primary side region on the PCB, and the other end thereof is provided on the front side of the display device through the secondary side region on the PCB so that the primary side and the secondary side on the PCB. The present invention relates to a power saving mode display apparatus using an optical fiber for indicating a power saving mode to the outside regardless of insulation of an area.

The device of the present invention is one end is connected to the front end of the LED of the primary region, another end is connected to the front surface of the PCB through the secondary region, and when the LED emits light as an optical fiber that outputs the light emitting source to the outside To indicate that a power saving mode is performed.

Therefore, the present invention can transmit 90% or more of the light emitting source due to its characteristics, and not only can achieve the same effect as installing the LED on the front panel, but also the optical fiber transmits the light emitting source instead of directly supplying power. The same effect as using an insulated wire can be obtained, so that the size of the PCB can be reduced by eliminating a separate insulation distance on the PCB.

Description

Power saving mode display device using optical fiber

The present invention relates to a power saving mode display device using an optical fiber.

More specifically, one end of the optical fiber is connected to the front side of the LED installed in the primary region on the PCB, and the other end is provided on the front side of the display device through the secondary side region on the PCB so that the primary side and the secondary side on the PCB. The present invention relates to a power saving mode display device using an optical fiber for indicating a power saving mode to the outside regardless of insulation of an area.

In general, the Display Power Management System (DPMS) is a function that saves power by managing the power of a display device, a peripheral device of the PC main body, in response to the use state of the PC main body. Proposed by the Standard Association.

According to the VESA proposal, the computer selectively supplies or blocks the horizontal synchronizing signal and the vertical synchronizing signal to the display apparatus in order to realize different power management states in response to the use state of the PC main body, and the display apparatus horizontally synchronizes from the PC main body. Perform a power management state corresponding to a state in which a signal and a vertical synchronization signal are input.

At this time, the power management state is classified into an on state, a stand-by state, a suspend state, and a power off state. Here, in the On State, both pulse outputs of the horizontal sync signal and the vertical sync signal are shown, and in the standby state, only the pulse output of the vertical sync signal is shown. In the suspend state, only the pulse output of the horizontal synchronization signal appears, and the power off state does not show both the pulse output of the horizontal synchronization signal and the vertical synchronization signal.

These power management states are sequentially in On State mode → Stand-by state mode → Suspend state mode → Power off state in response to the continuous passage of time when the PC is not in use. Power Off State), the power consumption is 80W in normal state, 65W or less in standby state, 25W or less in suspend state, and 5W or less in power off state. The specifications of the device product are specified.

As described above, when the display apparatus is switched from the operation mode to the power saving mode, the display is displayed so that the user can know. In this case, an LED is often used as the display element. This will be described below with reference to the accompanying drawings, FIG. 1.

1 is a block diagram illustrating an exemplary embodiment of a display device for displaying to the outside that a power saving mode is performed according to the prior art.

As shown, the power input unit 10 rectifies and smoothes the AC power to supply the input power of the display device, and is switched in synchronization with the frequency of the signal displayed on the display device to rectify the power input unit 10. And a main transformer 11 receiving the smoothed power to the primary side and being induced to the secondary side to generate DC voltages of different sizes according to the turns ratio of the secondary side, and supply them to each block in the rear stage, and the power input unit 10. Auxiliary transformer 12 for generating a predetermined DC voltage by the rectified and smoothed power of the), regulator 13 to ensure that the power input from the auxiliary transformer 12 is always a constant voltage, and the regulator Operated by the power input from (13), and outputs the power saving mode signal to the main transformer (11) according to the presence or absence of horizontal and vertical synchronization signal input from the PC main body, It consists of a microcomputer 14 for outputting an LED drive signal for notifying the mode to the outside.

In the configuration as described above, when the display device is supplied with driving power through the power input unit 10 to the display device, and the normal horizontal and vertical synchronization signals are input from the PC main body, the main transformer 11 switches by the horizontal synchronization signal. As a result, a plurality of DC voltages having different magnitudes are supplied to the driving power of each circuit block so that the display device operates normally.

At this time, when there is no horizontal sync signal or vertical sync signal input from the PC main body, the microcomputer 14 determines this and controls the display device to be switched to a power saving mode.

The microcomputer 14 outputs a standby signal when only the vertical synchronization signal is input from the PC main body, and outputs a suspension signal when only the horizontal synchronization signal is input, thereby partially driving the main transformer 11 to generate a desired voltage. Only one is to be supplied, but if the horizontal, vertical synchronous signal is not input to all to output the off signal to control the main transformer 11 does not operate.

As described above, when the display device is switched to the power saving mode, the microcomputer 14 controls only the output of the main transformer 11, so that the auxiliary transformer 12 generates a predetermined voltage regardless of the power saving mode of the display device. Will print it out.

Therefore, the microcomputer 14 is driven by the power supplied from the auxiliary transformer 12, and the operation of the LEDs provided on the front of the display device to inform the user that the display device is performing the power saving mode as described above. The LED driving signal for controlling is output to the LED driving unit (not shown) to supply the driving power to the LED.

2 is a block diagram illustrating another exemplary embodiment of a display device for displaying to the outside that a power saving mode is performed according to the related art.

As shown, the PCB of the display device is laid out on the primary side and the secondary side so that each circuit element is assembled on the above-described PCB. At this time, the primary side generates the input power so that the driving power is supplied to each circuit block assembled on the secondary side, and the primary side and the secondary side areas should be electrically insulated.

The electrical insulation of the primary side and the secondary side region described above can be achieved by maintaining a constant distance, which is referred to as a safety standard insulation distance, specifically 6.5 mm. Therefore, in order to equip the front panel of the display device through the secondary side with the LED which receives the power from the primary side, the safety distance is adjusted to both sides to be electrically insulated from the secondary side area on both sides of the line supplying the driving power to the LED. MM should be secured.

However, as described above, in order to control the driving of the LED indicating that the power saving mode of the display device is performed, the microcomputer is supplied with the driving power of at least 5 W by the auxiliary transformer to drive the power saving mode of the display device. It is impossible to implement less than this, and there is a problem that the PCB size must be large due to the area occupied by the auxiliary transformer on the PCB.

In addition, when the LED is to be driven by the primary side power supply, a large amount of space is required on the PCB to separate the LED driving power supply line connected from the primary side to the secondary side from the secondary side. There is a problem that must be large.

Accordingly, an object of the present invention is to connect one end of the optical fiber to the front side of the LED installed in the primary region on the PCB, and the other end thereof to the front of the display device through the secondary side region on the PCB to solve the above problems. The present invention provides a power saving mode display device using an optical fiber for indicating the power saving mode to the outside regardless of the insulation of the primary side and secondary side regions on the PCB.

1 is a block diagram illustrating an embodiment of a display device for displaying to the outside that a power saving mode is performed according to the prior art;

2 is a block diagram illustrating another embodiment of a display device for displaying to the outside that a power saving mode is performed according to the prior art;

3 is a block diagram illustrating an embodiment of a display device for displaying to the outside that a power saving mode is performed using an optical fiber according to the present invention;

FIG. 4 is a diagram illustrating a display device implemented by FIG. 3 on a PCB.

* Description of Signs of Main Parts of Drawings *

20: main transformer 21: power input unit

22: LED driver 23: LED

24: optical fiber

When the display device according to the present invention for achieving the above object is switched to the power saving mode, in the power saving mode display device to the LED to emit light to have a different color in each power saving mode step by the LED drive unit, the present invention, The device consists of an optical fiber whose one end is connected to the LED front end of the primary area, another one is connected to the front of the PCB through the secondary area, and when the LED emits light, the optical fiber outputs its light source to the outside. It is characterized by indicating that is performed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram illustrating an embodiment of a display device for displaying to the outside that a power saving mode is performed using an optical fiber according to the present invention.

As shown, the LED driver 22 is directly connected to the power input unit 21 for supplying input power to the main transformer 20, and the LED driver 22 is directly connected to the LED driver 22 described above. 22 is configured in the primary side area on the PCB so that the driving power supplied from the power input unit 21 can be supplied to the LED 23 and emit light under the control of the microcomputer.

At this time, one end of the optical fiber 24 is connected to the front end of the LED 23 configured in the above-described primary side region, and the other one end thereof is configured to be connected to the front panel of the display device through the secondary side region of the PCB. .

The operation of the power saving mode display device of the display device according to the present invention configured as described above will be described in more detail with reference to the accompanying drawings.

The detailed description of the main transformer and the microcomputer mentioned in the prior art will be omitted, and only the driving part of the display device, which is the other part, will be described.

When the display apparatus is switched to the power saving mode, the LED driver 22 is driven so that the primary side power is supplied to the LED 23, which causes the LED 23 to emit light. Therefore, the optical fiber 24 connected to the front end of the LED 23 transmits the light emitting source supplied from the LED 23 so that the other end of the display device front panel starts to emit light.

Therefore, as described above, the optical fiber provided in the present invention can transmit 90% or more of the light emitting source due to its characteristics, and not only can achieve the same effect as installing the LED on the front panel, but the optical fiber does not directly supply power. Since the light emitting source is transmitted, the same effect as using an insulated wire can be obtained. Therefore, the size of the PCB can be reduced by eliminating a separate insulation distance on the PCB.

Claims (1)

In the power saving mode display device in which the LED is emitted and displayed to the outside to have a different color in each power saving mode step by the LED driver when the display device is switched to the power saving mode, One end is connected to the LED front end of the primary area, and another one end is connected to the front surface of the PCB through the secondary area, and when the LED emits light, the power saving mode consists of an optical fiber that outputs its light source to the outside. Power saving mode display device using an optical fiber, characterized in that the display.