KR200348429Y1 - Apparatus for Display of Bus Route Information Using LCD Back light - Google Patents

Abstract

The present invention relates to a bus route guide display apparatus using an LCD backlight, and is provided on a bus route guide display apparatus for displaying a bus destination, a route number, and an advertisement, which is fixed to one side of the bus and is fixed to one side of the bus. A case having a built-in protection panel, an LCD backlight fixed inside the case, including a fluorescent lamp and a reflecting plate, at least one light diffusion film on the LCD backlight, and a bus guide or advertisement on the light diffusion film. And a fixing frame for fixing the guide panel and the LCD backlight, the light diffusion film, and the guide panel integrally.

Description

Bus route information display device using LCD display backlight {Apparatus for Display of Bus Route Information Using LCD Back light}

The present invention relates to a bus route guidance display device, and more particularly, a light emitting device of a guidance display device for displaying a bus route, which uses a backlight of a liquid crystal display (LCD) as a light source, thereby lowering power consumption. In addition, the present invention relates to a bus route guidance display apparatus using an LCD backlight which enables bus users to easily identify bus numbers and destinations at night due to uniform and high luminance light emission.

In general, bus routes or billboards allow bus users at night to display the route numbers or bus destinations of the bus at a distance using illumination devices to identify them.

A bus guide display device according to the prior art is disclosed in Korean Patent Registration No. 10-0398324 (Bus Guide Display Panel using an LED element).

1 is a schematic configuration diagram of a bus guide display panel using an LED element according to the prior art, the bus guide display panel 230 first, a predetermined display for displaying information for the bus guide on the display panel 230 An area is set, and a plurality of LED elements 240 are arranged along the line corresponding to the content to be displayed, for example, bus number "301", in the display area. In the bus guide display panel 230, the LED device is not disposed in the display area except for the line of the display content.

Although not shown, the bus guide display panel 230 is configured such that a plurality of LED mounting holes are formed on the printed circuit board along the line, and the LED elements 240 are disposed in the LED mounting holes. do. The shape of the LED mounting hole will be determined according to the specific shape of the LED device 240 to be used in the bus guide display panel 230, but the LED device 240 is typically a cathode (cathod) and an anode ( Since the anode has a two-pin structure, it is generally configured as two pin holes.

In addition, the bus guide display panel 230 includes a power connection unit 250 for receiving power from the outside, and the size of the power connection unit 250 may be appropriately determined at the time of implementation. Since some of them may not be mounted or a failure may occur during use, power supply to the plurality of LED elements 240 is preferably performed in parallel. In addition, although not shown in FIG. 1, in order to drive the LED device 240, a resistance device for setting a current value flowing through the LED device 240 when power is applied should be provided. It is most preferable that each of the LED device 240 is configured.

Since the power used in the bus is generally 24 volts, when the voltage is directly supplied to the resistors and the LEDs 240, excessive heat may be generated in the resistors. It may be desirable to supply the resistor device and the LED device 240. In this case, although not shown in FIG. 1, the bus guide display panel 230 may further include a voltage conversion module, and the second power down-converted through the voltage conversion module is connected to the power connection unit 250. On the contrary, the power supplied through the power connection unit 250 may be transformed downward in the voltage conversion module.

However, since the bus guide display panel using the LED elements according to the related art uses a plurality of LED elements, the entire thickness of the display panel becomes thick, and the inconvenience of having to replace the LED element whenever an LED element expires occurs. In addition, since only the LED peripheral area is bright, there is a problem in that the brightness of the entire display panel is not uniform.

Therefore, to solve the above-mentioned problems of the prior art, the purpose is to use a backlight for LCD as a light source in the bus route guide display device, using an LCD backlight for uniform surface light emission using a light diffusion film The purpose is to provide a bus route guidance display device.

1 is a schematic configuration diagram of a bus guide display panel using an LED device according to the prior art,

2 is an exploded perspective view of a bus route guide display apparatus using the LCD backlight according to the present invention,

3 is a combined perspective view of a bus route guide display apparatus using the LCD backlight according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: power supply 102: case

110 LCD backlight 112, 114 first and second cold cathode fluorescent lamp

116: reflector 118: frame

122, 124, and 126: first to third light diffusing films

130: information board 140: fixed frame

In order to achieve the object of the present invention, a bus route guide display device using an LCD backlight is mounted on a bus and displays a bus destination, a route number, and an advertisement, and is fixed to one side of the bus. A case having a built-in protection bus guide display panel, an LCD backlight fixed inside the case and including a fluorescent lamp and a reflecting plate, at least one light diffusion film on the LCD backlight, and a bus guide or advertisement on the light diffusion film. It is characterized in that it comprises a guide plate and a fixing frame for fixing the LCD backlight, the light diffusion film and the guide display plate integrally.

One embodiment of the present invention made as described above will be described in detail with reference to FIG. 2.

Figure 2 is an exploded perspective view of the bus route guide display device using the LCD backlight according to an embodiment of the present invention, Figure 3 is a combined perspective view, the case is fixed to one side of the front and rear of the bus to protect the bus guide display panel ( 102, an LCD backlight 110 fixed inside the case 102 and including first and second fluorescent lamps 112 and 114 and a reflector plate 116, and a first upper portion of the LCD backlight 110. To third light diffusing films 122, 124 and 126, a guide panel 130 on which a bus guide or advertisement is designed on the third light diffusing film 126, the LCD backlight 110, and light. Fixing frame 140 for fixing the diffusion film 122 to 126 and the guide panel 130 integrally, a backlight driver (not shown) attached to the bottom of the LCD backlight 116, and the case 102 outside Connecting a power line to supply DC power to the backlight driver and the first and second fluorescent lamps 116. It is composed of a power supply (100).

The operation of the present invention configured as described above will be described in more detail with reference to FIGS. 2 and 3 as follows.

First, the present invention emits a bus route number guide display board or a destination guide display board mounted on the front and rear of the bus so as to easily identify at night, and uses the backlight of the LCD as the light source so that the surface light can be emitted with high brightness. It is.

As shown in FIG. 2, the LCD backlight 116, the first to third light diffusing films 122 to 126, and the guide display panel 130 are fixed to the fixing frame 140, and then the case 102 is fixed. Fix it inside.

The power supply device 100 is connected to the outside of the case 102 to supply power to the backlight driver located at the bottom of the LCD backlight 116.

The LCD backlight 110 is used as a light source by embedding the first and second cold cathode fluorescent lamps 112 and 114 at both ends, and the front surface of the LCD backlight 110 is uniform by the reflector 116 during light emission. Keep the brightness.

To this end, the reflecting plate has predetermined irregularities at regular intervals so that the light irradiated from the first and second cold cathode fluorescent lamps 112 and 114 is reflected from the uneven portion to be irradiated to the upper glass side.

As described above, the LCD backlight 110 fixes the upper glass covering the reflecting plate 116 and the reflecting plate 16 by the frame 118 and the cold cathode fluorescent lamps 112 and 114 at both ends thereof, A fluorescent lamp driver including a ballast and an illumination control module for driving the first and second cold cathode fluorescent lamps 112 and 114 are attached.

The light reflected by the reflector 116 is transmitted through the first to third light diffusing films 122 to 126 through the upper glass.

The first to third light diffusing films 122 to 126 form fine unevenness at predetermined intervals to scatter and transmit incident light, thereby irradiating with uniform brightness as a whole.

The light transmitted through the first to third light diffusing films 122 to 126 is irradiated to the guide display panel 130 so that the bus number, the destination guide or the advertising text designed on the surface of the guide display panel 130 emit light.

The guide panel 130 is attached to the transparent or translucent acrylic plate on the upper surface in a variety of colors, such as a patterned tape to emit light when the LCD backlight 110 is lit.

Although the preferred embodiment according to the present invention has been described above, the present invention can be modified in various shapes according to the configuration of the LCD backlight or the number of light diffusing films, and those skilled in the art can use the utility model of the present invention. It is understood that various modifications and variations can be made without departing from the scope of registration.

As described above, the bus route guide display apparatus using the LCD backlight according to the present invention uses the LCD backlight as a light source of the bus route guide display apparatus, so that the overall thickness of the display panel can be reduced, and the brightness of the display panel is uniform. Because it can be irradiated with high brightness, it not only reduces clarity and aesthetics, but also uses cold cathode fluorescent lamps, which can reduce power consumption and have a long lifespan.

Claims (3)

In the bus route information display apparatus mounted on a bus and displaying a bus destination, a route number, and an advertisement, A case fixed to one side of the front and rear surfaces of the bus to protect the built-in bus guide display panel; An LCD backlight fixed inside the case and including a fluorescent lamp and a reflector; At least one light diffusing film on the LCD backlight; A guide plate on which the bus guide or advertisement is designed on the light diffusion film; And And a fixing frame for fixing the LCD backlight, the light diffusing film, and the guide display panel integrally. The bus route guide display device using a backlight of a liquid crystal display device. The method of claim 1, A driving driver for driving the fluorescent lamp on the back of the LCD backlight; And And a power supply device detachable outside the case to supply driving power to the driving driver and the fluorescent lamp. The method of claim 1, And the fluorescent lamp is one of a cold cathode and a hot cathode fluorescent lamp.